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Finding the Fourth Proportional to 3,468.66, 5,200.11 and 1,618.82

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Solution

The fourth proportional to 3,468.66, 5,200.11 and 1,618.82 is: 2,426.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,468.66 : 5,200.11 = 1,618.82 : x
  2. Step 2: Convert to fraction form
    3,468.66/5,200.11 = 1,618.82/x
  3. Step 3: Cross multiply
    3,468.66x = 5,200.11 × 1,618.82
  4. Step 4: Simplify right side
    3,468.66x = 8,418,042.07
  5. Step 5: Solve for x
    x = 8,418,042.07/3,468.66
  6. Step 6: Final answer
    x = 2,426.89

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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.