Home / 3,162.47-4,743.82-1,187.89

Finding the Fourth Proportional to 3,162.47, 4,743.82 and 1,187.89

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Solution

The fourth proportional to 3,162.47, 4,743.82 and 1,187.89 is: 1,781.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,162.47 : 4,743.82 = 1,187.89 : x
  2. Step 2: Convert to fraction form
    3,162.47/4,743.82 = 1,187.89/x
  3. Step 3: Cross multiply
    3,162.47x = 4,743.82 × 1,187.89
  4. Step 4: Simplify right side
    3,162.47x = 5,635,125.97
  5. Step 5: Solve for x
    x = 5,635,125.97/3,162.47
  6. Step 6: Final answer
    x = 1,781.88

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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.