If 4 is to 5, what is 8 to?

To determine the relationship between the pairs of numbers, we can look for a consistent ratio. The relationship 4 to 5 can be expressed as a fraction, which simplifies to the ratio of ( \frac{4}{5} ).

To find the corresponding number for 8, we set up a proportion using the same ratio:

[

\frac{4}{5} = \frac{8}{x}

]

Cross-multiplying gives us:

[

4x = 5 \times 8

]

[

4x = 40

]

[

x = \frac{40}{4}

]

[

x = 10

]

Thus, when 4 is related to 5, 8 corresponds to 10 based on this consistent ratio. This demonstrates that the correct answer is indeed 10, as it maintains the same proportional relationship established by the initial pair of numbers.