Question

In Portland, the tax on a property assessed at $320,000 is $3,840. If tax rates are proportional in this city, how much would the tax be on a property assessed at $730,000?

Answer 1

320,000 / 3,840 = 730,000 / x
cross multiply because this is a proportion
(320,000)(x) = (3,840)(730,000)
320,000x = 2,803,200,000
x = 2,803,200,000 / 320,000
x = 8760 <====