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Finding the Fourth Proportional to 2,514.33, 3,771.68 and 871.11

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Solution

The fourth proportional to 2,514.33, 3,771.68 and 871.11 is: 1,306.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,514.33 : 3,771.68 = 871.11 : x
  2. Step 2: Convert to fraction form
    2,514.33/3,771.68 = 871.11/x
  3. Step 3: Cross multiply
    2,514.33x = 3,771.68 × 871.11
  4. Step 4: Simplify right side
    2,514.33x = 3,285,543.81
  5. Step 5: Solve for x
    x = 3,285,543.81/2,514.33
  6. Step 6: Final answer
    x = 1,306.73

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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.