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Finding the Fourth Proportional to 5,308.75, 7,949.67 and 3,199.11

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Solution

The fourth proportional to 5,308.75, 7,949.67 and 3,199.11 is: 4,790.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,308.75 : 7,949.67 = 3,199.11 : x
  2. Step 2: Convert to fraction form
    5,308.75/7,949.67 = 3,199.11/x
  3. Step 3: Cross multiply
    5,308.75x = 7,949.67 × 3,199.11
  4. Step 4: Simplify right side
    5,308.75x = 25,431,868.79
  5. Step 5: Solve for x
    x = 25,431,868.79/5,308.75
  6. Step 6: Final answer
    x = 4,790.56

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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.