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Finding the Fourth Proportional to 2,351.75, 3,527.71 and 791.80

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Solution

The fourth proportional to 2,351.75, 3,527.71 and 791.80 is: 1,187.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,351.75 : 3,527.71 = 791.80 : x
  2. Step 2: Convert to fraction form
    2,351.75/3,527.71 = 791.80/x
  3. Step 3: Cross multiply
    2,351.75x = 3,527.71 × 791.80
  4. Step 4: Simplify right side
    2,351.75x = 2,793,229.98
  5. Step 5: Solve for x
    x = 2,793,229.98/2,351.75
  6. Step 6: Final answer
    x = 1,187.73

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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.