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Finding the Fourth Proportional to 3,294.48, 4,938.80 and 1,243.92

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Solution

The fourth proportional to 3,294.48, 4,938.80 and 1,243.92 is: 1,864.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,294.48 : 4,938.80 = 1,243.92 : x
  2. Step 2: Convert to fraction form
    3,294.48/4,938.80 = 1,243.92/x
  3. Step 3: Cross multiply
    3,294.48x = 4,938.80 × 1,243.92
  4. Step 4: Simplify right side
    3,294.48x = 6,143,472.10
  5. Step 5: Solve for x
    x = 6,143,472.10/3,294.48
  6. Step 6: Final answer
    x = 1,864.78

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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.