Home / 5,186.80-7,761.96-3,239.92

Finding the Fourth Proportional to 5,186.80, 7,761.96 and 3,239.92

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Solution

The fourth proportional to 5,186.80, 7,761.96 and 3,239.92 is: 4,848.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.80 : 7,761.96 = 3,239.92 : x
  2. Step 2: Convert to fraction form
    5,186.80/7,761.96 = 3,239.92/x
  3. Step 3: Cross multiply
    5,186.80x = 7,761.96 × 3,239.92
  4. Step 4: Simplify right side
    5,186.80x = 25,148,129.44
  5. Step 5: Solve for x
    x = 25,148,129.44/5,186.80
  6. Step 6: Final answer
    x = 4,848.49

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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.