Home / 8,686.38-13,029.50-2,112.60

Finding the Fourth Proportional to 8,686.38, 13,029.50 and 2,112.60

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Solution

The fourth proportional to 8,686.38, 13,029.50 and 2,112.60 is: 3,168.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.38 : 13,029.50 = 2,112.60 : x
  2. Step 2: Convert to fraction form
    8,686.38/13,029.50 = 2,112.60/x
  3. Step 3: Cross multiply
    8,686.38x = 13,029.50 × 2,112.60
  4. Step 4: Simplify right side
    8,686.38x = 27,526,121.70
  5. Step 5: Solve for x
    x = 27,526,121.70/8,686.38
  6. Step 6: Final answer
    x = 3,168.88

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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.