Home / 8,102.09-12,154.82-3,422.11

Finding the Fourth Proportional to 8,102.09, 12,154.82 and 3,422.11

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Solution

The fourth proportional to 8,102.09, 12,154.82 and 3,422.11 is: 5,133.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,102.09 : 12,154.82 = 3,422.11 : x
  2. Step 2: Convert to fraction form
    8,102.09/12,154.82 = 3,422.11/x
  3. Step 3: Cross multiply
    8,102.09x = 12,154.82 × 3,422.11
  4. Step 4: Simplify right side
    8,102.09x = 41,595,131.07
  5. Step 5: Solve for x
    x = 41,595,131.07/8,102.09
  6. Step 6: Final answer
    x = 5,133.88

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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.