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Finding the Fourth Proportional to 5,490.97, 7,581.03 and 3,605.90

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Solution

The fourth proportional to 5,490.97, 7,581.03 and 3,605.90 is: 4,978.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.97 : 7,581.03 = 3,605.90 : x
  2. Step 2: Convert to fraction form
    5,490.97/7,581.03 = 3,605.90/x
  3. Step 3: Cross multiply
    5,490.97x = 7,581.03 × 3,605.90
  4. Step 4: Simplify right side
    5,490.97x = 27,336,380.14
  5. Step 5: Solve for x
    x = 27,336,380.14/5,490.97
  6. Step 6: Final answer
    x = 4,978.43

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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.