Home / 5,517.20-8,319.50-4,912.40

Finding the Fourth Proportional to 5,517.20, 8,319.50 and 4,912.40

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Solution

The fourth proportional to 5,517.20, 8,319.50 and 4,912.40 is: 7,407.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,517.20 : 8,319.50 = 4,912.40 : x
  2. Step 2: Convert to fraction form
    5,517.20/8,319.50 = 4,912.40/x
  3. Step 3: Cross multiply
    5,517.20x = 8,319.50 × 4,912.40
  4. Step 4: Simplify right side
    5,517.20x = 40,868,711.80
  5. Step 5: Solve for x
    x = 40,868,711.80/5,517.20
  6. Step 6: Final answer
    x = 7,407.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.