Home / 3,979.92-5,971.77-1,789.32

Finding the Fourth Proportional to 3,979.92, 5,971.77 and 1,789.32

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Solution

The fourth proportional to 3,979.92, 5,971.77 and 1,789.32 is: 2,684.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.92 : 5,971.77 = 1,789.32 : x
  2. Step 2: Convert to fraction form
    3,979.92/5,971.77 = 1,789.32/x
  3. Step 3: Cross multiply
    3,979.92x = 5,971.77 × 1,789.32
  4. Step 4: Simplify right side
    3,979.92x = 10,685,407.50
  5. Step 5: Solve for x
    x = 10,685,407.50/3,979.92
  6. Step 6: Final answer
    x = 2,684.83

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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.