Home / 1,372.50-2,745

Finding the Third Proportional to 1,372.50 and 2,745

Calculator

Solution

The third proportional to 1,372.50 and 2,745 is: 5,490

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.50 : 2,745 = 2,745 : x
  2. Step 2: Convert to fraction form
    1,372.50/2,745 = 2,745/x
  3. Step 3: Cross multiply
    1,372.50x = 2,745 × 2,745
  4. Step 4: Simplify right side
    1,372.50x = 7,535,025
  5. Step 5: Solve for x
    x = 7,535,025/1,372.50
  6. Step 6: Final answer
    x = 5,490

Related Problems

Find third proportional to 686.25 and 1,372.50
Half scale
Find third proportional to 2,745 and 5,490
Double scale
Find third proportional to 1,375 and 2,749
Similar ratio
Find third proportional to 2,058.75 and 4,117.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.