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Finding the Fourth Proportional to 2,387.87, 3,581.23 and 827.94

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Solution

The fourth proportional to 2,387.87, 3,581.23 and 827.94 is: 1,241.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387.87 : 3,581.23 = 827.94 : x
  2. Step 2: Convert to fraction form
    2,387.87/3,581.23 = 827.94/x
  3. Step 3: Cross multiply
    2,387.87x = 3,581.23 × 827.94
  4. Step 4: Simplify right side
    2,387.87x = 2,965,043.57
  5. Step 5: Solve for x
    x = 2,965,043.57/2,387.87
  6. Step 6: Final answer
    x = 1,241.71

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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.