Home / 5,489.30-8,221.80-2,200.70

Finding the Fourth Proportional to 5,489.30, 8,221.80 and 2,200.70

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Solution

The fourth proportional to 5,489.30, 8,221.80 and 2,200.70 is: 3,296.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,489.30 : 8,221.80 = 2,200.70 : x
  2. Step 2: Convert to fraction form
    5,489.30/8,221.80 = 2,200.70/x
  3. Step 3: Cross multiply
    5,489.30x = 8,221.80 × 2,200.70
  4. Step 4: Simplify right side
    5,489.30x = 18,093,715.26
  5. Step 5: Solve for x
    x = 18,093,715.26/5,489.30
  6. Step 6: Final answer
    x = 3,296.18

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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.