Perfect Fourths 1 2 3 4 Perfect Fourths A Perfect Fourth is equivalent to moving four degrees in the scale. It is called Perfect because of its strong, pure sound.July 30, 2011 1 2 3 4 Perfect Fourths A Perfect Fourth is equivalent to moving four degrees in the scale. It is called Perfect because of its strong, pure sound. Perfect 4th – Up A Perfect 4th is equal to 2 Whole Steps + 1 Half Step. It is also equal to 5 Half Steps. Please press the Exercise button below.
