Home / 3,186.98-4,778.62-1,236.92

Finding the Fourth Proportional to 3,186.98, 4,778.62 and 1,236.92

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Solution

The fourth proportional to 3,186.98, 4,778.62 and 1,236.92 is: 1,854.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.98 : 4,778.62 = 1,236.92 : x
  2. Step 2: Convert to fraction form
    3,186.98/4,778.62 = 1,236.92/x
  3. Step 3: Cross multiply
    3,186.98x = 4,778.62 × 1,236.92
  4. Step 4: Simplify right side
    3,186.98x = 5,910,770.65
  5. Step 5: Solve for x
    x = 5,910,770.65/3,186.98
  6. Step 6: Final answer
    x = 1,854.66

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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.