Home / 2,279.22-3,145.36-1,284.54

Finding the Fourth Proportional to 2,279.22, 3,145.36 and 1,284.54

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Solution

The fourth proportional to 2,279.22, 3,145.36 and 1,284.54 is: 1,772.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.22 : 3,145.36 = 1,284.54 : x
  2. Step 2: Convert to fraction form
    2,279.22/3,145.36 = 1,284.54/x
  3. Step 3: Cross multiply
    2,279.22x = 3,145.36 × 1,284.54
  4. Step 4: Simplify right side
    2,279.22x = 4,040,340.73
  5. Step 5: Solve for x
    x = 4,040,340.73/2,279.22
  6. Step 6: Final answer
    x = 1,772.69

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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.