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Finding the Fourth Proportional to 3,543.82, 5,314.11 and 1,234.78

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Solution

The fourth proportional to 3,543.82, 5,314.11 and 1,234.78 is: 1,851.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543.82 : 5,314.11 = 1,234.78 : x
  2. Step 2: Convert to fraction form
    3,543.82/5,314.11 = 1,234.78/x
  3. Step 3: Cross multiply
    3,543.82x = 5,314.11 × 1,234.78
  4. Step 4: Simplify right side
    3,543.82x = 6,561,756.75
  5. Step 5: Solve for x
    x = 6,561,756.75/3,543.82
  6. Step 6: Final answer
    x = 1,851.61

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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.