Home / 5,489.40-8,215.20-3,299.70

Finding the Fourth Proportional to 5,489.40, 8,215.20 and 3,299.70

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Solution

The fourth proportional to 5,489.40, 8,215.20 and 3,299.70 is: 4,938.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,489.40 : 8,215.20 = 3,299.70 : x
  2. Step 2: Convert to fraction form
    5,489.40/8,215.20 = 3,299.70/x
  3. Step 3: Cross multiply
    5,489.40x = 8,215.20 × 3,299.70
  4. Step 4: Simplify right side
    5,489.40x = 27,107,695.44
  5. Step 5: Solve for x
    x = 27,107,695.44/5,489.40
  6. Step 6: Final answer
    x = 4,938.19

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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.