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Finding the Fourth Proportional to 3,402.61, 5,100.17 and 1,938.53

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Solution

The fourth proportional to 3,402.61, 5,100.17 and 1,938.53 is: 2,905.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,402.61 : 5,100.17 = 1,938.53 : x
  2. Step 2: Convert to fraction form
    3,402.61/5,100.17 = 1,938.53/x
  3. Step 3: Cross multiply
    3,402.61x = 5,100.17 × 1,938.53
  4. Step 4: Simplify right side
    3,402.61x = 9,886,835.61
  5. Step 5: Solve for x
    x = 9,886,835.61/3,402.61
  6. Step 6: Final answer
    x = 2,905.66

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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.