Home / 8,131.90-12,190.45-2,936.56

Finding the Fourth Proportional to 8,131.90, 12,190.45 and 2,936.56

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Solution

The fourth proportional to 8,131.90, 12,190.45 and 2,936.56 is: 4,402.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.90 : 12,190.45 = 2,936.56 : x
  2. Step 2: Convert to fraction form
    8,131.90/12,190.45 = 2,936.56/x
  3. Step 3: Cross multiply
    8,131.90x = 12,190.45 × 2,936.56
  4. Step 4: Simplify right side
    8,131.90x = 35,797,987.85
  5. Step 5: Solve for x
    x = 35,797,987.85/8,131.90
  6. Step 6: Final answer
    x = 4,402.17

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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.