Home / 1,225-1,339

Finding the Third Proportional to 1,225 and 1,339

Calculator

Solution

The third proportional to 1,225 and 1,339 is: 1,463.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225 : 1,339 = 1,339 : x
  2. Step 2: Convert to fraction form
    1,225/1,339 = 1,339/x
  3. Step 3: Cross multiply
    1,225x = 1,339 × 1,339
  4. Step 4: Simplify right side
    1,225x = 1,792,921
  5. Step 5: Solve for x
    x = 1,792,921/1,225
  6. Step 6: Final answer
    x = 1,463.61

Related Problems

Find third proportional to 612.50 and 669.50
Half scale
Find third proportional to 2,450 and 2,678
Double scale
Find third proportional to 1,227 and 1,341
Similar ratio
Find third proportional to 1,837.50 and 2,008.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.