# Math Help - conversions cont.

1. ## conversions cont.

ok so how many kilometers are in 3273 mi?
i tried doing the following:

(3273mi/1km)(5,280/1) but i dont know if its right<--- because im missing the 3rd part

2. No, no, 1 mi = 1.609 km.

$3273\:\text{mi} \times \dfrac{1.609\:\text{km}}{1\:\text{mi}}$ is what you want to evaluate.

You're confusing with the conversion 1 mile = 5,280 feet.

3. yes i put feet to do a three step conversion but this ^ way is faster
so i got 5266.257 but i have to divide what do i divide it by?

4. There is no need to divide by anything in this case. 5266.26 km is the answer.

If you have a conversion that does not involve 1, like 16 oz. = 453.6 g or 12 in. = 30.48 cm, then yes, would end up doing a division. For example, convert 2,000 g to oz.:
$2,000\:\text{g} \times \dfrac{16\:\text{oz}}{453.6\:\text{g}}$
... you would multiply 2,000 by 16, and then divide by 453.6.

5. thnx for ur help eumyang ur a talented mathematician thnx for all of ur help over the last few days