This is equivalent to saying that the dimensions of the two orbits are inversely proportional to the masses of the earth and the moon.
"A Text-Book of Astronomy"
George C. Comstock
The other star moves in an ellipse of precisely similar shape, but probably smaller size, since the dimensions of the two orbits are inversely proportional to the masses of the two bodies, but it is customary to neglect this motion of the larger star and to give to the smaller one an orbit whose diameter is equal to the sum of the diameters of the two real orbits.
"A Text-Book of Astronomy"
George C. Comstock
Since the length of a vibrating string is inversely proportional to its frequency, each string is made about half as long as the string an octave below, two thirds as long as the string a fifth below, etc.
"Italian Harpsichord-Building in the 16th and 17th Centuries"
John D. Shortridge