Home / 1,279.52-1,918.26-1,177.02

Finding the Fourth Proportional to 1,279.52, 1,918.26 and 1,177.02

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Solution

The fourth proportional to 1,279.52, 1,918.26 and 1,177.02 is: 1,764.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279.52 : 1,918.26 = 1,177.02 : x
  2. Step 2: Convert to fraction form
    1,279.52/1,918.26 = 1,177.02/x
  3. Step 3: Cross multiply
    1,279.52x = 1,918.26 × 1,177.02
  4. Step 4: Simplify right side
    1,279.52x = 2,257,830.39
  5. Step 5: Solve for x
    x = 2,257,830.39/1,279.52
  6. Step 6: Final answer
    x = 1,764.59

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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.