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Finding the Fourth Proportional to 7,392.97, 10,202.31 and 4,035.78

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Solution

The fourth proportional to 7,392.97, 10,202.31 and 4,035.78 is: 5,569.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,392.97 : 10,202.31 = 4,035.78 : x
  2. Step 2: Convert to fraction form
    7,392.97/10,202.31 = 4,035.78/x
  3. Step 3: Cross multiply
    7,392.97x = 10,202.31 × 4,035.78
  4. Step 4: Simplify right side
    7,392.97x = 41,174,318.70
  5. Step 5: Solve for x
    x = 41,174,318.70/7,392.97
  6. Step 6: Final answer
    x = 5,569.39

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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.