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Finding the Fourth Proportional to 8,279.92, 12,476.92 and 6,851.20

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Solution

The fourth proportional to 8,279.92, 12,476.92 and 6,851.20 is: 10,324.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.92 : 12,476.92 = 6,851.20 : x
  2. Step 2: Convert to fraction form
    8,279.92/12,476.92 = 6,851.20/x
  3. Step 3: Cross multiply
    8,279.92x = 12,476.92 × 6,851.20
  4. Step 4: Simplify right side
    8,279.92x = 85,481,874.30
  5. Step 5: Solve for x
    x = 85,481,874.30/8,279.92
  6. Step 6: Final answer
    x = 10,324.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.