Verified Answer :

Here, According to proportionality theorem, arms ratio would be equal.
4/5 = 6/x
x = 6/4 * 5
x = 30/4
x = 7.5

In short, Your Answer would be 7.5

Hope this helps!

Suntron3000

I think this uses the triangle mid segment theorem, so 4/6 is in proportion to 5/6. Set them equal to each other and solve by cross multiplying. Hope this helps!

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