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Finding the Fourth Proportional to 7,896.97, 11,839.96 and 3,998.71

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Solution

The fourth proportional to 7,896.97, 11,839.96 and 3,998.71 is: 5,995.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,896.97 : 11,839.96 = 3,998.71 : x
  2. Step 2: Convert to fraction form
    7,896.97/11,839.96 = 3,998.71/x
  3. Step 3: Cross multiply
    7,896.97x = 11,839.96 × 3,998.71
  4. Step 4: Simplify right side
    7,896.97x = 47,344,566.45
  5. Step 5: Solve for x
    x = 47,344,566.45/7,896.97
  6. Step 6: Final answer
    x = 5,995.28

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Similar ratio
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1.5x scale

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.