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Finding the Fourth Proportional to 2,711.40, 4,067.67 and 956.33

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Solution

The fourth proportional to 2,711.40, 4,067.67 and 956.33 is: 1,434.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,711.40 : 4,067.67 = 956.33 : x
  2. Step 2: Convert to fraction form
    2,711.40/4,067.67 = 956.33/x
  3. Step 3: Cross multiply
    2,711.40x = 4,067.67 × 956.33
  4. Step 4: Simplify right side
    2,711.40x = 3,890,034.85
  5. Step 5: Solve for x
    x = 3,890,034.85/2,711.40
  6. Step 6: Final answer
    x = 1,434.70

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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.