Home / 2,279.07-3,418.68-719.09

Finding the Fourth Proportional to 2,279.07, 3,418.68 and 719.09

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Solution

The fourth proportional to 2,279.07, 3,418.68 and 719.09 is: 1,078.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.07 : 3,418.68 = 719.09 : x
  2. Step 2: Convert to fraction form
    2,279.07/3,418.68 = 719.09/x
  3. Step 3: Cross multiply
    2,279.07x = 3,418.68 × 719.09
  4. Step 4: Simplify right side
    2,279.07x = 2,458,338.60
  5. Step 5: Solve for x
    x = 2,458,338.60/2,279.07
  6. Step 6: Final answer
    x = 1,078.66

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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.