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Finding the Fourth Proportional to 3,728.57, 5,591.21 and 1,262.75

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Solution

The fourth proportional to 3,728.57, 5,591.21 and 1,262.75 is: 1,893.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.57 : 5,591.21 = 1,262.75 : x
  2. Step 2: Convert to fraction form
    3,728.57/5,591.21 = 1,262.75/x
  3. Step 3: Cross multiply
    3,728.57x = 5,591.21 × 1,262.75
  4. Step 4: Simplify right side
    3,728.57x = 7,060,266.16
  5. Step 5: Solve for x
    x = 7,060,266.16/3,728.57
  6. Step 6: Final answer
    x = 1,893.56

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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.