An​ alligator's tail length is proportional to its body length. An alligator with a body length of 5.7 feet has a tail length of 6.4 feet. What is the tail length of an alligator whose body length is 9.9 ​feet?

To find the tail length of an alligator with a body length of 9.9 feet, we can use the information given: that the ratio of tail length to body length is consistent for alligators.

Let x be the tail length of the alligator with a body length of 9.9 feet.

Since the ratio between tail length and body length is constant, we can set up a proportion:

5.7/6.4 = 9.9/x

Cross multiplying, we get:

5.7x = 6.4 * 9.9

5.7x = 63.36

Dividing by 5.7 on both sides:

x = 63.36 / 5.7

x ≈ 11.12

Therefore, the tail length of an alligator with a body length of 9.9 feet is approximately 11.12 feet.