Home / 5,152.20-7,716.96-3,418.80

Finding the Fourth Proportional to 5,152.20, 7,716.96 and 3,418.80

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Solution

The fourth proportional to 5,152.20, 7,716.96 and 3,418.80 is: 5,120.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,152.20 : 7,716.96 = 3,418.80 : x
  2. Step 2: Convert to fraction form
    5,152.20/7,716.96 = 3,418.80/x
  3. Step 3: Cross multiply
    5,152.20x = 7,716.96 × 3,418.80
  4. Step 4: Simplify right side
    5,152.20x = 26,382,742.85
  5. Step 5: Solve for x
    x = 26,382,742.85/5,152.20
  6. Step 6: Final answer
    x = 5,120.68

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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.