Home / 9,131.92-12,610.57-6,720.75

Finding the Fourth Proportional to 9,131.92, 12,610.57 and 6,720.75

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Solution

The fourth proportional to 9,131.92, 12,610.57 and 6,720.75 is: 9,280.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,131.92 : 12,610.57 = 6,720.75 : x
  2. Step 2: Convert to fraction form
    9,131.92/12,610.57 = 6,720.75/x
  3. Step 3: Cross multiply
    9,131.92x = 12,610.57 × 6,720.75
  4. Step 4: Simplify right side
    9,131.92x = 84,752,471.53
  5. Step 5: Solve for x
    x = 84,752,471.53/9,131.92
  6. Step 6: Final answer
    x = 9,280.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.