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Finding the Fourth Proportional to 5,608.29, 7,739.42 and 3,251.80

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Solution

The fourth proportional to 5,608.29, 7,739.42 and 3,251.80 is: 4,487.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,608.29 : 7,739.42 = 3,251.80 : x
  2. Step 2: Convert to fraction form
    5,608.29/7,739.42 = 3,251.80/x
  3. Step 3: Cross multiply
    5,608.29x = 7,739.42 × 3,251.80
  4. Step 4: Simplify right side
    5,608.29x = 25,167,045.96
  5. Step 5: Solve for x
    x = 25,167,045.96/5,608.29
  6. Step 6: Final answer
    x = 4,487.47

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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.