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Finding the Fourth Proportional to 2,251.34, 3,375.42 and 863.51

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Solution

The fourth proportional to 2,251.34, 3,375.42 and 863.51 is: 1,294.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,251.34 : 3,375.42 = 863.51 : x
  2. Step 2: Convert to fraction form
    2,251.34/3,375.42 = 863.51/x
  3. Step 3: Cross multiply
    2,251.34x = 3,375.42 × 863.51
  4. Step 4: Simplify right side
    2,251.34x = 2,914,712.65
  5. Step 5: Solve for x
    x = 2,914,712.65/2,251.34
  6. Step 6: Final answer
    x = 1,294.65

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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.