Home / 7,691.06-11,540.24-3,991.32

Finding the Fourth Proportional to 7,691.06, 11,540.24 and 3,991.32

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Solution

The fourth proportional to 7,691.06, 11,540.24 and 3,991.32 is: 5,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,691.06 : 11,540.24 = 3,991.32 : x
  2. Step 2: Convert to fraction form
    7,691.06/11,540.24 = 3,991.32/x
  3. Step 3: Cross multiply
    7,691.06x = 11,540.24 × 3,991.32
  4. Step 4: Simplify right side
    7,691.06x = 46,060,790.72
  5. Step 5: Solve for x
    x = 46,060,790.72/7,691.06
  6. Step 6: Final answer
    x = 5,988.87

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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.