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Finding the Fourth Proportional to 4,979.11, 7,469.34 and 1,691.32

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Solution

The fourth proportional to 4,979.11, 7,469.34 and 1,691.32 is: 2,537.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.11 : 7,469.34 = 1,691.32 : x
  2. Step 2: Convert to fraction form
    4,979.11/7,469.34 = 1,691.32/x
  3. Step 3: Cross multiply
    4,979.11x = 7,469.34 × 1,691.32
  4. Step 4: Simplify right side
    4,979.11x = 12,633,044.13
  5. Step 5: Solve for x
    x = 12,633,044.13/4,979.11
  6. Step 6: Final answer
    x = 2,537.21

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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.