Home / 8,490-11,339

Finding the Third Proportional to 8,490 and 11,339

Calculator

Solution

The third proportional to 8,490 and 11,339 is: 15,144.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,490 : 11,339 = 11,339 : x
  2. Step 2: Convert to fraction form
    8,490/11,339 = 11,339/x
  3. Step 3: Cross multiply
    8,490x = 11,339 × 11,339
  4. Step 4: Simplify right side
    8,490x = 128,572,921
  5. Step 5: Solve for x
    x = 128,572,921/8,490
  6. Step 6: Final answer
    x = 15,144.04

Related Problems

Find third proportional to 4,245 and 5,669.50
Half scale
Find third proportional to 16,980 and 22,678
Double scale
Find third proportional to 8,492 and 11,342
Similar ratio
Find third proportional to 12,735 and 17,008.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.