Home / 5,729.76-7,906.56-3,211.68

Finding the Fourth Proportional to 5,729.76, 7,906.56 and 3,211.68

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Solution

The fourth proportional to 5,729.76, 7,906.56 and 3,211.68 is: 4,431.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,729.76 : 7,906.56 = 3,211.68 : x
  2. Step 2: Convert to fraction form
    5,729.76/7,906.56 = 3,211.68/x
  3. Step 3: Cross multiply
    5,729.76x = 7,906.56 × 3,211.68
  4. Step 4: Simplify right side
    5,729.76x = 25,393,340.62
  5. Step 5: Solve for x
    x = 25,393,340.62/5,729.76
  6. Step 6: Final answer
    x = 4,431.83

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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.