Home / 3,979.08-5,491.62-2,581.32

Finding the Fourth Proportional to 3,979.08, 5,491.62 and 2,581.32

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Solution

The fourth proportional to 3,979.08, 5,491.62 and 2,581.32 is: 3,562.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.08 : 5,491.62 = 2,581.32 : x
  2. Step 2: Convert to fraction form
    3,979.08/5,491.62 = 2,581.32/x
  3. Step 3: Cross multiply
    3,979.08x = 5,491.62 × 2,581.32
  4. Step 4: Simplify right side
    3,979.08x = 14,175,628.54
  5. Step 5: Solve for x
    x = 14,175,628.54/3,979.08
  6. Step 6: Final answer
    x = 3,562.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.