Question

Find the common ratio.

Answer 1

1. (1 : -3) is the common ratio

2. 324, 972, 2916

Answer 2

324, -972, 2916

Explanation:

Divide a number by the previous number to find r.

r = -12/4 = -3

Multiply a number by r to find the next number.

-108 * (-3) = 324

324 * (-3) = -972

-972 * (-3) = 2916

Answer: 324, -972, 2916