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Finding the Fourth Proportional to 3,658.71, 5,508.32 and 2,511.99

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Solution

The fourth proportional to 3,658.71, 5,508.32 and 2,511.99 is: 3,781.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,658.71 : 5,508.32 = 2,511.99 : x
  2. Step 2: Convert to fraction form
    3,658.71/5,508.32 = 2,511.99/x
  3. Step 3: Cross multiply
    3,658.71x = 5,508.32 × 2,511.99
  4. Step 4: Simplify right side
    3,658.71x = 13,836,832.20
  5. Step 5: Solve for x
    x = 13,836,832.20/3,658.71
  6. Step 6: Final answer
    x = 3,781.89

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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.