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Finding the Fourth Proportional to 2,486.62, 3,732.17 and 1,621.98

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Solution

The fourth proportional to 2,486.62, 3,732.17 and 1,621.98 is: 2,434.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.62 : 3,732.17 = 1,621.98 : x
  2. Step 2: Convert to fraction form
    2,486.62/3,732.17 = 1,621.98/x
  3. Step 3: Cross multiply
    2,486.62x = 3,732.17 × 1,621.98
  4. Step 4: Simplify right side
    2,486.62x = 6,053,505.10
  5. Step 5: Solve for x
    x = 6,053,505.10/2,486.62
  6. Step 6: Final answer
    x = 2,434.43

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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.