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Finding the Fourth Proportional to 5,679.82, 8,508.42 and 3,455.92

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Solution

The fourth proportional to 5,679.82, 8,508.42 and 3,455.92 is: 5,176.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.82 : 8,508.42 = 3,455.92 : x
  2. Step 2: Convert to fraction form
    5,679.82/8,508.42 = 3,455.92/x
  3. Step 3: Cross multiply
    5,679.82x = 8,508.42 × 3,455.92
  4. Step 4: Simplify right side
    5,679.82x = 29,404,371.90
  5. Step 5: Solve for x
    x = 29,404,371.90/5,679.82
  6. Step 6: Final answer
    x = 5,176.99

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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.