Home / 8,131.88-12,199.04-2,938.97

Finding the Fourth Proportional to 8,131.88, 12,199.04 and 2,938.97

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Solution

The fourth proportional to 8,131.88, 12,199.04 and 2,938.97 is: 4,408.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.88 : 12,199.04 = 2,938.97 : x
  2. Step 2: Convert to fraction form
    8,131.88/12,199.04 = 2,938.97/x
  3. Step 3: Cross multiply
    8,131.88x = 12,199.04 × 2,938.97
  4. Step 4: Simplify right side
    8,131.88x = 35,852,536.90
  5. Step 5: Solve for x
    x = 35,852,536.90/8,131.88
  6. Step 6: Final answer
    x = 4,408.89

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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.