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Finding the Fourth Proportional to 6,879.52, 10,311.90 and 5,231.98

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Solution

The fourth proportional to 6,879.52, 10,311.90 and 5,231.98 is: 7,842.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,879.52 : 10,311.90 = 5,231.98 : x
  2. Step 2: Convert to fraction form
    6,879.52/10,311.90 = 5,231.98/x
  3. Step 3: Cross multiply
    6,879.52x = 10,311.90 × 5,231.98
  4. Step 4: Simplify right side
    6,879.52x = 53,951,654.56
  5. Step 5: Solve for x
    x = 53,951,654.56/6,879.52
  6. Step 6: Final answer
    x = 7,842.36

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1.5x scale

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.