Home / 2,758.67-4,137.97-1,115.20

Finding the Fourth Proportional to 2,758.67, 4,137.97 and 1,115.20

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Solution

The fourth proportional to 2,758.67, 4,137.97 and 1,115.20 is: 1,672.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.67 : 4,137.97 = 1,115.20 : x
  2. Step 2: Convert to fraction form
    2,758.67/4,137.97 = 1,115.20/x
  3. Step 3: Cross multiply
    2,758.67x = 4,137.97 × 1,115.20
  4. Step 4: Simplify right side
    2,758.67x = 4,614,664.14
  5. Step 5: Solve for x
    x = 4,614,664.14/2,758.67
  6. Step 6: Final answer
    x = 1,672.79

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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.