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Finding the Fourth Proportional to 5,397.29, 7,447.71 and 3,981.75

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Solution

The fourth proportional to 5,397.29, 7,447.71 and 3,981.75 is: 5,494.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,397.29 : 7,447.71 = 3,981.75 : x
  2. Step 2: Convert to fraction form
    5,397.29/7,447.71 = 3,981.75/x
  3. Step 3: Cross multiply
    5,397.29x = 7,447.71 × 3,981.75
  4. Step 4: Simplify right side
    5,397.29x = 29,654,919.29
  5. Step 5: Solve for x
    x = 29,654,919.29/5,397.29
  6. Step 6: Final answer
    x = 5,494.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.