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Finding the Fourth Proportional to 6,793.18, 9,380.58 and 4,279.78

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Solution

The fourth proportional to 6,793.18, 9,380.58 and 4,279.78 is: 5,909.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,793.18 : 9,380.58 = 4,279.78 : x
  2. Step 2: Convert to fraction form
    6,793.18/9,380.58 = 4,279.78/x
  3. Step 3: Cross multiply
    6,793.18x = 9,380.58 × 4,279.78
  4. Step 4: Simplify right side
    6,793.18x = 40,146,818.67
  5. Step 5: Solve for x
    x = 40,146,818.67/6,793.18
  6. Step 6: Final answer
    x = 5,909.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.