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Finding the Fourth Proportional to 7,791.70, 11,685.24 and 2,793.29

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Solution

The fourth proportional to 7,791.70, 11,685.24 and 2,793.29 is: 4,189.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.70 : 11,685.24 = 2,793.29 : x
  2. Step 2: Convert to fraction form
    7,791.70/11,685.24 = 2,793.29/x
  3. Step 3: Cross multiply
    7,791.70x = 11,685.24 × 2,793.29
  4. Step 4: Simplify right side
    7,791.70x = 32,640,326.35
  5. Step 5: Solve for x
    x = 32,640,326.35/7,791.70
  6. Step 6: Final answer
    x = 4,189.11

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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.