Home / 3,979.46-5,969.25-1,382.48

Finding the Fourth Proportional to 3,979.46, 5,969.25 and 1,382.48

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Solution

The fourth proportional to 3,979.46, 5,969.25 and 1,382.48 is: 2,073.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.46 : 5,969.25 = 1,382.48 : x
  2. Step 2: Convert to fraction form
    3,979.46/5,969.25 = 1,382.48/x
  3. Step 3: Cross multiply
    3,979.46x = 5,969.25 × 1,382.48
  4. Step 4: Simplify right side
    3,979.46x = 8,252,368.74
  5. Step 5: Solve for x
    x = 8,252,368.74/3,979.46
  6. Step 6: Final answer
    x = 2,073.74

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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.