Home / 5,231.12-7,843.68-2,112.62

Finding the Fourth Proportional to 5,231.12, 7,843.68 and 2,112.62

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Solution

The fourth proportional to 5,231.12, 7,843.68 and 2,112.62 is: 3,167.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.12 : 7,843.68 = 2,112.62 : x
  2. Step 2: Convert to fraction form
    5,231.12/7,843.68 = 2,112.62/x
  3. Step 3: Cross multiply
    5,231.12x = 7,843.68 × 2,112.62
  4. Step 4: Simplify right side
    5,231.12x = 16,570,676.02
  5. Step 5: Solve for x
    x = 16,570,676.02/5,231.12
  6. Step 6: Final answer
    x = 3,167.71

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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.