To find the missing number, we can set up a proportion. Let x represent the missing number.
We know that the ratio 3:9 is equivalent to x:18.
Setting up a proportion:
3/9 = x/18
To solve for x, we cross-multiply:
9x = 3 * 18
9x = 54
Dividing both sides by 9:
x = 6
Therefore, the missing number that makes the ratio equivalent to 3:9 is 6.
Find the number that makes the ratio equivalent to 3:9.
_:18
1 answer