Home / 1,279.23-1,918.69-576.96

Finding the Fourth Proportional to 1,279.23, 1,918.69 and 576.96

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Solution

The fourth proportional to 1,279.23, 1,918.69 and 576.96 is: 865.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279.23 : 1,918.69 = 576.96 : x
  2. Step 2: Convert to fraction form
    1,279.23/1,918.69 = 576.96/x
  3. Step 3: Cross multiply
    1,279.23x = 1,918.69 × 576.96
  4. Step 4: Simplify right side
    1,279.23x = 1,107,007.38
  5. Step 5: Solve for x
    x = 1,107,007.38/1,279.23
  6. Step 6: Final answer
    x = 865.37

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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.