Home / 3,128.67-4,693.23-1,279.82

Finding the Fourth Proportional to 3,128.67, 4,693.23 and 1,279.82

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Solution

The fourth proportional to 3,128.67, 4,693.23 and 1,279.82 is: 1,919.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.67 : 4,693.23 = 1,279.82 : x
  2. Step 2: Convert to fraction form
    3,128.67/4,693.23 = 1,279.82/x
  3. Step 3: Cross multiply
    3,128.67x = 4,693.23 × 1,279.82
  4. Step 4: Simplify right side
    3,128.67x = 6,006,489.62
  5. Step 5: Solve for x
    x = 6,006,489.62/3,128.67
  6. Step 6: Final answer
    x = 1,919.82

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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.