Home / 5,388.20-8,082.30-4,869.80

Finding the Fourth Proportional to 5,388.20, 8,082.30 and 4,869.80

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Solution

The fourth proportional to 5,388.20, 8,082.30 and 4,869.80 is: 7,304.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.20 : 8,082.30 = 4,869.80 : x
  2. Step 2: Convert to fraction form
    5,388.20/8,082.30 = 4,869.80/x
  3. Step 3: Cross multiply
    5,388.20x = 8,082.30 × 4,869.80
  4. Step 4: Simplify right side
    5,388.20x = 39,359,184.54
  5. Step 5: Solve for x
    x = 39,359,184.54/5,388.20
  6. Step 6: Final answer
    x = 7,304.70

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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.