Question

8:4::4:x value put out​

Answer 1

Answer:

x = 2.

See, ratios work like fractions. 8:4::4:x can be written as:

$\frac{8}{4} = \frac{4}{x}$

Simplify and you get the answer 2.

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Answer 2

Answer:

$\frac{8}{4} = \frac{4}{x} \\ 8x = 4 \times 4 \\ 8x = 16 \\ x = \frac{16}{8} \\ x = 2$

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