Home / 3,488.45-5,231.61-2,180.21

Finding the Fourth Proportional to 3,488.45, 5,231.61 and 2,180.21

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Solution

The fourth proportional to 3,488.45, 5,231.61 and 2,180.21 is: 3,269.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,488.45 : 5,231.61 = 2,180.21 : x
  2. Step 2: Convert to fraction form
    3,488.45/5,231.61 = 2,180.21/x
  3. Step 3: Cross multiply
    3,488.45x = 5,231.61 × 2,180.21
  4. Step 4: Simplify right side
    3,488.45x = 11,405,982.28
  5. Step 5: Solve for x
    x = 11,405,982.28/3,488.45
  6. Step 6: Final answer
    x = 3,269.65

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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.