Home / 8,286.05-12,431.01-2,739.39

Finding the Fourth Proportional to 8,286.05, 12,431.01 and 2,739.39

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Solution

The fourth proportional to 8,286.05, 12,431.01 and 2,739.39 is: 4,109.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286.05 : 12,431.01 = 2,739.39 : x
  2. Step 2: Convert to fraction form
    8,286.05/12,431.01 = 2,739.39/x
  3. Step 3: Cross multiply
    8,286.05x = 12,431.01 × 2,739.39
  4. Step 4: Simplify right side
    8,286.05x = 34,053,348.14
  5. Step 5: Solve for x
    x = 34,053,348.14/8,286.05
  6. Step 6: Final answer
    x = 4,109.72

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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.