Proportional relationship
Write the ratio 12 : 36 as an equivalent ratio of x : 3
To write the ratio 12 : 36 as an equivalent ratio of x : 3, we need to find a number that we can multiply both 12 and 36 by to get x and 3, respectively.
12 : 36 is equivalent to x : 3 if we multiply both sides by 1/12:
12 * (1/12) : 36 * (1/12)
1 : 3
Therefore, the ratio 12 : 36 is equivalent to 1 : 3 when written as x : 3.