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Finding the Fourth Proportional to 3,381.53, 5,071.54 and 1,531.42

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Solution

The fourth proportional to 3,381.53, 5,071.54 and 1,531.42 is: 2,296.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,381.53 : 5,071.54 = 1,531.42 : x
  2. Step 2: Convert to fraction form
    3,381.53/5,071.54 = 1,531.42/x
  3. Step 3: Cross multiply
    3,381.53x = 5,071.54 × 1,531.42
  4. Step 4: Simplify right side
    3,381.53x = 7,766,657.79
  5. Step 5: Solve for x
    x = 7,766,657.79/3,381.53
  6. Step 6: Final answer
    x = 2,296.79

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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.