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Finding the Fourth Proportional to 7,658.82, 11,489.14 and 2,728.96

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Solution

The fourth proportional to 7,658.82, 11,489.14 and 2,728.96 is: 4,093.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,658.82 : 11,489.14 = 2,728.96 : x
  2. Step 2: Convert to fraction form
    7,658.82/11,489.14 = 2,728.96/x
  3. Step 3: Cross multiply
    7,658.82x = 11,489.14 × 2,728.96
  4. Step 4: Simplify right side
    7,658.82x = 31,353,403.49
  5. Step 5: Solve for x
    x = 31,353,403.49/7,658.82
  6. Step 6: Final answer
    x = 4,093.76

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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.