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Finding the Fourth Proportional to 5,292.70, 7,938.43 and 1,397.41

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Solution

The fourth proportional to 5,292.70, 7,938.43 and 1,397.41 is: 2,095.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,292.70 : 7,938.43 = 1,397.41 : x
  2. Step 2: Convert to fraction form
    5,292.70/7,938.43 = 1,397.41/x
  3. Step 3: Cross multiply
    5,292.70x = 7,938.43 × 1,397.41
  4. Step 4: Simplify right side
    5,292.70x = 11,093,201.77
  5. Step 5: Solve for x
    x = 11,093,201.77/5,292.70
  6. Step 6: Final answer
    x = 2,095.95

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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.