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Finding the Fourth Proportional to 6,652.92, 9,979.43 and 3,179.64

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Solution

The fourth proportional to 6,652.92, 9,979.43 and 3,179.64 is: 4,769.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,652.92 : 9,979.43 = 3,179.64 : x
  2. Step 2: Convert to fraction form
    6,652.92/9,979.43 = 3,179.64/x
  3. Step 3: Cross multiply
    6,652.92x = 9,979.43 × 3,179.64
  4. Step 4: Simplify right side
    6,652.92x = 31,730,978.91
  5. Step 5: Solve for x
    x = 31,730,978.91/6,652.92
  6. Step 6: Final answer
    x = 4,769.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.