Home / 2,722.20-4,081.88-1,260.11

Finding the Fourth Proportional to 2,722.20, 4,081.88 and 1,260.11

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Solution

The fourth proportional to 2,722.20, 4,081.88 and 1,260.11 is: 1,889.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.20 : 4,081.88 = 1,260.11 : x
  2. Step 2: Convert to fraction form
    2,722.20/4,081.88 = 1,260.11/x
  3. Step 3: Cross multiply
    2,722.20x = 4,081.88 × 1,260.11
  4. Step 4: Simplify right side
    2,722.20x = 5,143,591.10
  5. Step 5: Solve for x
    x = 5,143,591.10/2,722.20
  6. Step 6: Final answer
    x = 1,889.50

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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.