Home / 2,770.20-3,822.80-1,591.25

Finding the Fourth Proportional to 2,770.20, 3,822.80 and 1,591.25

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Solution

The fourth proportional to 2,770.20, 3,822.80 and 1,591.25 is: 2,195.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.20 : 3,822.80 = 1,591.25 : x
  2. Step 2: Convert to fraction form
    2,770.20/3,822.80 = 1,591.25/x
  3. Step 3: Cross multiply
    2,770.20x = 3,822.80 × 1,591.25
  4. Step 4: Simplify right side
    2,770.20x = 6,083,003.43
  5. Step 5: Solve for x
    x = 6,083,003.43/2,770.20
  6. Step 6: Final answer
    x = 2,195.87

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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.