Home / 8,972.76-12,388.10-6,610.80

Finding the Fourth Proportional to 8,972.76, 12,388.10 and 6,610.80

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Solution

The fourth proportional to 8,972.76, 12,388.10 and 6,610.80 is: 9,127.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.76 : 12,388.10 = 6,610.80 : x
  2. Step 2: Convert to fraction form
    8,972.76/12,388.10 = 6,610.80/x
  3. Step 3: Cross multiply
    8,972.76x = 12,388.10 × 6,610.80
  4. Step 4: Simplify right side
    8,972.76x = 81,895,251.48
  5. Step 5: Solve for x
    x = 81,895,251.48/8,972.76
  6. Step 6: Final answer
    x = 9,127.10

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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.