write the ratio 12 : 9 as an equivalent ratio to 4 : x

To find an equivalent ratio to 12 : 9 that is equivalent to 4 : x, we can set up a proportion:

12/9 = 4/x

Cross-multiplying, we get:

12x = 9 * 4

12x = 36

Dividing both sides by 12, we find:

x = 3

Therefore, the equivalent ratio to 12 : 9 that is equivalent to 4 : x is 4 : 3.