Home / 5,211.20-7,811.71-3,331.33

Finding the Fourth Proportional to 5,211.20, 7,811.71 and 3,331.33

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Solution

The fourth proportional to 5,211.20, 7,811.71 and 3,331.33 is: 4,993.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.20 : 7,811.71 = 3,331.33 : x
  2. Step 2: Convert to fraction form
    5,211.20/7,811.71 = 3,331.33/x
  3. Step 3: Cross multiply
    5,211.20x = 7,811.71 × 3,331.33
  4. Step 4: Simplify right side
    5,211.20x = 26,023,356.02
  5. Step 5: Solve for x
    x = 26,023,356.02/5,211.20
  6. Step 6: Final answer
    x = 4,993.73

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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.