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Finding the Fourth Proportional to 3,612.43, 4,985.13 and 2,040.49

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Solution

The fourth proportional to 3,612.43, 4,985.13 and 2,040.49 is: 2,815.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.43 : 4,985.13 = 2,040.49 : x
  2. Step 2: Convert to fraction form
    3,612.43/4,985.13 = 2,040.49/x
  3. Step 3: Cross multiply
    3,612.43x = 4,985.13 × 2,040.49
  4. Step 4: Simplify right side
    3,612.43x = 10,172,107.91
  5. Step 5: Solve for x
    x = 10,172,107.91/3,612.43
  6. Step 6: Final answer
    x = 2,815.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.