Home / 3,128.69-4,694.96-1,279.82

Finding the Fourth Proportional to 3,128.69, 4,694.96 and 1,279.82

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Solution

The fourth proportional to 3,128.69, 4,694.96 and 1,279.82 is: 1,920.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.69 : 4,694.96 = 1,279.82 : x
  2. Step 2: Convert to fraction form
    3,128.69/4,694.96 = 1,279.82/x
  3. Step 3: Cross multiply
    3,128.69x = 4,694.96 × 1,279.82
  4. Step 4: Simplify right side
    3,128.69x = 6,008,680.23
  5. Step 5: Solve for x
    x = 6,008,680.23/3,128.69
  6. Step 6: Final answer
    x = 1,920.51

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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.