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Finding the Fourth Proportional to 3,769.42, 5,654.84 and 1,689.52

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Solution

The fourth proportional to 3,769.42, 5,654.84 and 1,689.52 is: 2,534.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,769.42 : 5,654.84 = 1,689.52 : x
  2. Step 2: Convert to fraction form
    3,769.42/5,654.84 = 1,689.52/x
  3. Step 3: Cross multiply
    3,769.42x = 5,654.84 × 1,689.52
  4. Step 4: Simplify right side
    3,769.42x = 9,553,965.28
  5. Step 5: Solve for x
    x = 9,553,965.28/3,769.42
  6. Step 6: Final answer
    x = 2,534.60

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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.