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Complete Question

Which equation could you use to solve for x in the proportion StartFraction 4 over 5 EndFraction = StartFraction 9 over x EndFraction?

  • 4 x = 14
  • 4 x = 45
  • 5 x = 13
  • 5 x = 36

Answer:

(B) 4x = 45

Step-by-step explanation:

The given proportion is:

[Tex]\dfrac{4}{5}=\dfrac{9}{x}[/TeX]

To find an equivalent expression, let us cross multiply:

4*x=5*9

This gives:

4x=45

The correct option is B.

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