Home / 2,261.20-3,391.80-800.50

Finding the Fourth Proportional to 2,261.20, 3,391.80 and 800.50

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Solution

The fourth proportional to 2,261.20, 3,391.80 and 800.50 is: 1,200.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.20 : 3,391.80 = 800.50 : x
  2. Step 2: Convert to fraction form
    2,261.20/3,391.80 = 800.50/x
  3. Step 3: Cross multiply
    2,261.20x = 3,391.80 × 800.50
  4. Step 4: Simplify right side
    2,261.20x = 2,715,135.90
  5. Step 5: Solve for x
    x = 2,715,135.90/2,261.20
  6. Step 6: Final answer
    x = 1,200.75

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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.