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Finding the Fourth Proportional to 8,355.28, 12,581.72 and 6,179.36

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Solution

The fourth proportional to 8,355.28, 12,581.72 and 6,179.36 is: 9,305.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,355.28 : 12,581.72 = 6,179.36 : x
  2. Step 2: Convert to fraction form
    8,355.28/12,581.72 = 6,179.36/x
  3. Step 3: Cross multiply
    8,355.28x = 12,581.72 × 6,179.36
  4. Step 4: Simplify right side
    8,355.28x = 77,746,977.30
  5. Step 5: Solve for x
    x = 77,746,977.30/8,355.28
  6. Step 6: Final answer
    x = 9,305.13

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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.