Home / 5,729.09-7,906.80-3,211.88

Finding the Fourth Proportional to 5,729.09, 7,906.80 and 3,211.88

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Solution

The fourth proportional to 5,729.09, 7,906.80 and 3,211.88 is: 4,432.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,729.09 : 7,906.80 = 3,211.88 : x
  2. Step 2: Convert to fraction form
    5,729.09/7,906.80 = 3,211.88/x
  3. Step 3: Cross multiply
    5,729.09x = 7,906.80 × 3,211.88
  4. Step 4: Simplify right side
    5,729.09x = 25,395,692.78
  5. Step 5: Solve for x
    x = 25,395,692.78/5,729.09
  6. Step 6: Final answer
    x = 4,432.76

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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.