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Finding the Fourth Proportional to 2,711.52, 4,067.87 and 956.45

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Solution

The fourth proportional to 2,711.52, 4,067.87 and 956.45 is: 1,434.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,711.52 : 4,067.87 = 956.45 : x
  2. Step 2: Convert to fraction form
    2,711.52/4,067.87 = 956.45/x
  3. Step 3: Cross multiply
    2,711.52x = 4,067.87 × 956.45
  4. Step 4: Simplify right side
    2,711.52x = 3,890,719.65
  5. Step 5: Solve for x
    x = 3,890,719.65/2,711.52
  6. Step 6: Final answer
    x = 1,434.89

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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.