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Finding the Fourth Proportional to 3,591.98, 5,388.24 and 1,126.80

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Solution

The fourth proportional to 3,591.98, 5,388.24 and 1,126.80 is: 1,690.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,591.98 : 5,388.24 = 1,126.80 : x
  2. Step 2: Convert to fraction form
    3,591.98/5,388.24 = 1,126.80/x
  3. Step 3: Cross multiply
    3,591.98x = 5,388.24 × 1,126.80
  4. Step 4: Simplify right side
    3,591.98x = 6,071,468.83
  5. Step 5: Solve for x
    x = 6,071,468.83/3,591.98
  6. Step 6: Final answer
    x = 1,690.29

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1.5x scale

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.