Question

find the number that makes the ratio equivalent to 72:48.
□:4
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Explanation:

Step1: Find the scale factor

We know that the second term of the original ratio is 48 and the second term of the new ratio is 4. So we divide 48 by 4 to find the scale factor.
$48\div4 = 12$

Step2: Divide the first term by the scale factor

Now we divide the first term of the original ratio (72) by the scale factor (12) to get the missing number.
$72\div12 = 6$

Answer:

6