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Ratios, rates, and proportions: medium


The musical interval between two sounds is called an "octave" if the ratio of the sounds' frequencies is 2:1. The following table shows the names of the musical intervals between two sounds based on the ratios of the two sounds' frequencies.
Name of the musical intervalRatio of two sound frequencies
Major third4:5
Perfect fourth3:4
Perfect fifth2:3
Major sixth3:5
If a sound is played with a frequency of 480 Hz, and a second sound is played with a frequency of 800 Hz, what is the name of the musical interval between the two sounds?
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