Scale Factor of 39 and 4

What is the Scale Factor of 39 and 4? What is the Scale Factor between 39 and 4? More specifically, what is the Scale Factor from a length of 39 to a length of 4? In other words, what (Scale Factor) can you multiply by 39 to get 4 as illustrated below?:

39 × Scale Factor = 4

To solve the equation above, you simply divide both sides by 39 to get the Scale Factor alone on the left side:

(39 × Scale Factor)/39 = 4/39
Scale Factor = 4/39

We could leave the answer like that, but we have also converted the answer to its simplest fraction form and to decimal form:

Fraction answer = 4/39
Decimal answer ≈ 0.102564

You may also be interested to know that we verified that 39 × 4/39 = 4 is true, which means that our answer is correct. Also, note that since 39 is greater than 4, this is a Reduction Scale Factor.

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