If one measurement of a golden rectangle is 6.1 inches, which number could be the other measurement? a. 4.482 in. b. 7.718 in. c. 9.870 in. d. 1.618 in.

A golden rectangle is a rectangle whose side lengths are in a golden ratio.
The golden ratio is:
1 : Φ which is approximately 1.618

Now, we are given that:
one side is 6.1 in
ration of sides is 1.618

This means that:
side1 / side2 = 1.618
side1 / 6.1 = 1.618
side1 = 6.1 * 1.618
side1 = 9.8698 which is approximately 9.87

Based on the above calculations, the correct choice is:
c. 9.870