A fourth and fifth interval, or as you called it, chord, is perfect is because it doesn't sound right in both a major or minor scale. Now, I know that isn't my most specific answer, but basically, one of the more plain major of minor chords, is a third. Let's say, if it was a C major third, it would have C and E, which would have to be major, due to the fact that there isn't a E in C minor, but instead, E flat. Yet, if it were to be a fifth interval chord, it would have to be perfect, because the G (fifth interval), appears in both C major and C minor. So...yeah...
Intervals like Unison,Octave,perfect fourth and perfect fifth are considered perfect because of the musical nature.
These intervals have a high consonance (=almost never sound dissonant) because it occurs on the root of all major and minor triad chords
For example: C Major = C E G
The interval from C to G is a perfect fifth
Chords built on the first, fourth, and fifth degrees of the major scale are major.
The "Primary" Chords in music are the three most commonly used chords. Those are the I, IV, and V (or V7) chords. Meaning the chords that are built off of the first, fourth, and fifth degree of a scale.
Within an octave there are four perfect intervals: perfect unison (P1), perfect fourth (P4), perfect fifth (P5), and perfect octave (P8).
Here's the order of Consonance - Perfect Fifth , Major Third / Minor Sixth , Minor Third / Major Sixth , Major Second / Minor Seventh , Minor Second / Major Seventh . Can you help me include the other intervals - Tritonic ( also known as augmented Fourth or Diminished Fifth ) , Perfect Fourth ??
Five half-steps make a perfect fourth.
Chords built on the first, fourth, and fifth degrees of the major scale are major.
The "Primary" Chords in music are the three most commonly used chords. Those are the I, IV, and V (or V7) chords. Meaning the chords that are built off of the first, fourth, and fifth degree of a scale.
Within an octave there are four perfect intervals: perfect unison (P1), perfect fourth (P4), perfect fifth (P5), and perfect octave (P8).
12
The fourth prime is 7 and the fifth is 11.
The fifth perfect number is 33,550,336.
One fifth to the fourth power is 0.0016
The fourth perfect number is 8128.
3/5
fourth
Here's the order of Consonance - Perfect Fifth , Major Third / Minor Sixth , Minor Third / Major Sixth , Major Second / Minor Seventh , Minor Second / Major Seventh . Can you help me include the other intervals - Tritonic ( also known as augmented Fourth or Diminished Fifth ) , Perfect Fourth ??
No. One fourth is 25% and one fifth is only 20%.