# How many miles are equal to 4 kilometers?

Nov 7, 2016

About $2.5$ miles

#### Explanation:

The exact conversion factor is:

$1 \textcolor{w h i t e}{.} \text{mile" = 1.609344color(white)(.)"km}$

Since this is close to $1.6 = \frac{8}{5}$ we can reckon that:

$4 \textcolor{w h i t e}{.} \text{km" ~~ 5/8 * 4color(white)(.)"miles" = 2.5color(white)(.)"miles}$

If the $4 \textcolor{w h i t e}{.} \text{km}$ figure were accurate then the miles figure would be closer to:

$\frac{4}{1.609344} \approx 2.4855 \textcolor{w h i t e}{.} \text{miles}$