Home / 7,991.97-11,988.07-3,061.86

Finding the Fourth Proportional to 7,991.97, 11,988.07 and 3,061.86

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Solution

The fourth proportional to 7,991.97, 11,988.07 and 3,061.86 is: 4,592.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.97 : 11,988.07 = 3,061.86 : x
  2. Step 2: Convert to fraction form
    7,991.97/11,988.07 = 3,061.86/x
  3. Step 3: Cross multiply
    7,991.97x = 11,988.07 × 3,061.86
  4. Step 4: Simplify right side
    7,991.97x = 36,705,784.36
  5. Step 5: Solve for x
    x = 36,705,784.36/7,991.97
  6. Step 6: Final answer
    x = 4,592.83

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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.