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Finding the Fourth Proportional to 8,694.12, 11,997.82 and 4,917.29

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Solution

The fourth proportional to 8,694.12, 11,997.82 and 4,917.29 is: 6,785.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,694.12 : 11,997.82 = 4,917.29 : x
  2. Step 2: Convert to fraction form
    8,694.12/11,997.82 = 4,917.29/x
  3. Step 3: Cross multiply
    8,694.12x = 11,997.82 × 4,917.29
  4. Step 4: Simplify right side
    8,694.12x = 58,996,824.57
  5. Step 5: Solve for x
    x = 58,996,824.57/8,694.12
  6. Step 6: Final answer
    x = 6,785.83

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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.