Home / 2,577.88-3,867.18-1,279

Finding the Fourth Proportional to 2,577.88, 3,867.18 and 1,279

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Solution

The fourth proportional to 2,577.88, 3,867.18 and 1,279 is: 1,918.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.88 : 3,867.18 = 1,279 : x
  2. Step 2: Convert to fraction form
    2,577.88/3,867.18 = 1,279/x
  3. Step 3: Cross multiply
    2,577.88x = 3,867.18 × 1,279
  4. Step 4: Simplify right side
    2,577.88x = 4,946,123.22
  5. Step 5: Solve for x
    x = 4,946,123.22/2,577.88
  6. Step 6: Final answer
    x = 1,918.68

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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.