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Finding the Fourth Proportional to 3,754.38, 5,631.57 and 1,018.38

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Solution

The fourth proportional to 3,754.38, 5,631.57 and 1,018.38 is: 1,527.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,754.38 : 5,631.57 = 1,018.38 : x
  2. Step 2: Convert to fraction form
    3,754.38/5,631.57 = 1,018.38/x
  3. Step 3: Cross multiply
    3,754.38x = 5,631.57 × 1,018.38
  4. Step 4: Simplify right side
    3,754.38x = 5,735,045.01
  5. Step 5: Solve for x
    x = 5,735,045.01/3,754.38
  6. Step 6: Final answer
    x = 1,527.56

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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.