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Finding the Fourth Proportional to 2,374.80, 3,561.96 and 731.21

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Solution

The fourth proportional to 2,374.80, 3,561.96 and 731.21 is: 1,096.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,374.80 : 3,561.96 = 731.21 : x
  2. Step 2: Convert to fraction form
    2,374.80/3,561.96 = 731.21/x
  3. Step 3: Cross multiply
    2,374.80x = 3,561.96 × 731.21
  4. Step 4: Simplify right side
    2,374.80x = 2,604,522.96
  5. Step 5: Solve for x
    x = 2,604,522.96/2,374.80
  6. Step 6: Final answer
    x = 1,096.73

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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.