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Finding the Fourth Proportional to 5,488.40, 8,230.20 and 2,200.40

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Solution

The fourth proportional to 5,488.40, 8,230.20 and 2,200.40 is: 3,299.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,488.40 : 8,230.20 = 2,200.40 : x
  2. Step 2: Convert to fraction form
    5,488.40/8,230.20 = 2,200.40/x
  3. Step 3: Cross multiply
    5,488.40x = 8,230.20 × 2,200.40
  4. Step 4: Simplify right side
    5,488.40x = 18,109,732.08
  5. Step 5: Solve for x
    x = 18,109,732.08/5,488.40
  6. Step 6: Final answer
    x = 3,299.64

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1.5x scale

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.