Home / 1,872-2,808

Finding the Third Proportional to 1,872 and 2,808

Calculator

Solution

The third proportional to 1,872 and 2,808 is: 4,212

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872 : 2,808 = 2,808 : x
  2. Step 2: Convert to fraction form
    1,872/2,808 = 2,808/x
  3. Step 3: Cross multiply
    1,872x = 2,808 × 2,808
  4. Step 4: Simplify right side
    1,872x = 7,884,864
  5. Step 5: Solve for x
    x = 7,884,864/1,872
  6. Step 6: Final answer
    x = 4,212

Related Problems

Find third proportional to 936 and 1,404
Half scale
Find third proportional to 3,744 and 5,616
Double scale
Find third proportional to 1,874 and 2,811
Similar ratio
Find third proportional to 2,808 and 4,212
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.