Home / 2,077.28-3,115.76-1,217.76

Finding the Fourth Proportional to 2,077.28, 3,115.76 and 1,217.76

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Solution

The fourth proportional to 2,077.28, 3,115.76 and 1,217.76 is: 1,826.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.28 : 3,115.76 = 1,217.76 : x
  2. Step 2: Convert to fraction form
    2,077.28/3,115.76 = 1,217.76/x
  3. Step 3: Cross multiply
    2,077.28x = 3,115.76 × 1,217.76
  4. Step 4: Simplify right side
    2,077.28x = 3,794,247.90
  5. Step 5: Solve for x
    x = 3,794,247.90/2,077.28
  6. Step 6: Final answer
    x = 1,826.55

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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.