Home / 5,129.69-7,691.45-2,005.97

Finding the Fourth Proportional to 5,129.69, 7,691.45 and 2,005.97

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Solution

The fourth proportional to 5,129.69, 7,691.45 and 2,005.97 is: 3,007.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.69 : 7,691.45 = 2,005.97 : x
  2. Step 2: Convert to fraction form
    5,129.69/7,691.45 = 2,005.97/x
  3. Step 3: Cross multiply
    5,129.69x = 7,691.45 × 2,005.97
  4. Step 4: Simplify right side
    5,129.69x = 15,428,769.47
  5. Step 5: Solve for x
    x = 15,428,769.47/5,129.69
  6. Step 6: Final answer
    x = 3,007.74

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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.