Type the missing number that makes these fractions equal: 1/ = 4/12

3

To find the missing number that makes the fractions equal, we need to find a number that, when multiplied by the denominator of the first fraction, equals the numerator of the second fraction.

In this case, we have the fractions 1/ and 4/12. To find the missing number, we need to find the value of the numerator of the first fraction.

To find this value, we can set up the following equation:

1/ x = 4

To solve for x, we can cross multiply:

x = 4

Therefore, the missing number that makes the fractions equal is 4.