Home / 8,910.24-12,294.12-6,785.28

Finding the Fourth Proportional to 8,910.24, 12,294.12 and 6,785.28

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Solution

The fourth proportional to 8,910.24, 12,294.12 and 6,785.28 is: 9,362.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,910.24 : 12,294.12 = 6,785.28 : x
  2. Step 2: Convert to fraction form
    8,910.24/12,294.12 = 6,785.28/x
  3. Step 3: Cross multiply
    8,910.24x = 12,294.12 × 6,785.28
  4. Step 4: Simplify right side
    8,910.24x = 83,419,046.55
  5. Step 5: Solve for x
    x = 83,419,046.55/8,910.24
  6. Step 6: Final answer
    x = 9,362.15

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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.