Home / 1,279.27-1,917.88-1,176.76

Finding the Fourth Proportional to 1,279.27, 1,917.88 and 1,176.76

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Solution

The fourth proportional to 1,279.27, 1,917.88 and 1,176.76 is: 1,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279.27 : 1,917.88 = 1,176.76 : x
  2. Step 2: Convert to fraction form
    1,279.27/1,917.88 = 1,176.76/x
  3. Step 3: Cross multiply
    1,279.27x = 1,917.88 × 1,176.76
  4. Step 4: Simplify right side
    1,279.27x = 2,256,884.47
  5. Step 5: Solve for x
    x = 2,256,884.47/1,279.27
  6. Step 6: Final answer
    x = 1,764.20

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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.