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Finding the Fourth Proportional to 8,355.30, 12,581.76 and 6,179.34

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Solution

The fourth proportional to 8,355.30, 12,581.76 and 6,179.34 is: 9,305.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,355.30 : 12,581.76 = 6,179.34 : x
  2. Step 2: Convert to fraction form
    8,355.30/12,581.76 = 6,179.34/x
  3. Step 3: Cross multiply
    8,355.30x = 12,581.76 × 6,179.34
  4. Step 4: Simplify right side
    8,355.30x = 77,746,972.84
  5. Step 5: Solve for x
    x = 77,746,972.84/8,355.30
  6. Step 6: Final answer
    x = 9,305.11

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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.