Home / 2,279.22-3,145.44-1,284.48

Finding the Fourth Proportional to 2,279.22, 3,145.44 and 1,284.48

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Solution

The fourth proportional to 2,279.22, 3,145.44 and 1,284.48 is: 1,772.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.22 : 3,145.44 = 1,284.48 : x
  2. Step 2: Convert to fraction form
    2,279.22/3,145.44 = 1,284.48/x
  3. Step 3: Cross multiply
    2,279.22x = 3,145.44 × 1,284.48
  4. Step 4: Simplify right side
    2,279.22x = 4,040,254.77
  5. Step 5: Solve for x
    x = 4,040,254.77/2,279.22
  6. Step 6: Final answer
    x = 1,772.65

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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.