Home / 5,716.72-7,889.38-3,198.68

Finding the Fourth Proportional to 5,716.72, 7,889.38 and 3,198.68

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Solution

The fourth proportional to 5,716.72, 7,889.38 and 3,198.68 is: 4,414.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,716.72 : 7,889.38 = 3,198.68 : x
  2. Step 2: Convert to fraction form
    5,716.72/7,889.38 = 3,198.68/x
  3. Step 3: Cross multiply
    5,716.72x = 7,889.38 × 3,198.68
  4. Step 4: Simplify right side
    5,716.72x = 25,235,584.16
  5. Step 5: Solve for x
    x = 25,235,584.16/5,716.72
  6. Step 6: Final answer
    x = 4,414.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.