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Finding the Fourth Proportional to 3,761.01, 5,640.65 and 1,421.27

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Solution

The fourth proportional to 3,761.01, 5,640.65 and 1,421.27 is: 2,131.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.01 : 5,640.65 = 1,421.27 : x
  2. Step 2: Convert to fraction form
    3,761.01/5,640.65 = 1,421.27/x
  3. Step 3: Cross multiply
    3,761.01x = 5,640.65 × 1,421.27
  4. Step 4: Simplify right side
    3,761.01x = 8,016,851.32
  5. Step 5: Solve for x
    x = 8,016,851.32/3,761.01
  6. Step 6: Final answer
    x = 2,131.57

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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.