Ratios and proportion, math homework help

no plagiarizing. explain with your own words.

  1. Describe how to use the Cross Products Property to determine whether 10 over 26 equals 16 over 42 is a true proportion.
  2. Explain how to use two different properties of proportions to change the proportion 3 over 4 equals 12 over 16 into the proportion 12 over 3 equals 16 over 4 .