Home / 3,228-4,832.82-2,129.02

Finding the Fourth Proportional to 3,228, 4,832.82 and 2,129.02

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Solution

The fourth proportional to 3,228, 4,832.82 and 2,129.02 is: 3,187.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228 : 4,832.82 = 2,129.02 : x
  2. Step 2: Convert to fraction form
    3,228/4,832.82 = 2,129.02/x
  3. Step 3: Cross multiply
    3,228x = 4,832.82 × 2,129.02
  4. Step 4: Simplify right side
    3,228x = 10,289,170.44
  5. Step 5: Solve for x
    x = 10,289,170.44/3,228
  6. Step 6: Final answer
    x = 3,187.48

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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.