Final answer:
To compare the relative sizes of 4000 pounds and 6 tons, convert the pounds to tons and then simplify the ratio.
Step-by-step explanation:
To compare the relative sizes of the quantities, we can convert the pounds to tons. There are 2000 pounds in a ton. So, to convert 4000 pounds to tons, we divide by 2000:
4000 pounds ÷ 2000 = 2 tons
Therefore, the ratio that compares the relative sizes of 4000 pounds to 6 tons is 2:6, which simplifies to 1:3.
Learn more about Comparing sizes of quantities