Home / 5,168.40-7,747.20-2,824.80

Finding the Fourth Proportional to 5,168.40, 7,747.20 and 2,824.80

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Solution

The fourth proportional to 5,168.40, 7,747.20 and 2,824.80 is: 4,234.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,168.40 : 7,747.20 = 2,824.80 : x
  2. Step 2: Convert to fraction form
    5,168.40/7,747.20 = 2,824.80/x
  3. Step 3: Cross multiply
    5,168.40x = 7,747.20 × 2,824.80
  4. Step 4: Simplify right side
    5,168.40x = 21,884,290.56
  5. Step 5: Solve for x
    x = 21,884,290.56/5,168.40
  6. Step 6: Final answer
    x = 4,234.25

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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.