Home / 3,979.24-5,970.30-1,382.20

Finding the Fourth Proportional to 3,979.24, 5,970.30 and 1,382.20

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Solution

The fourth proportional to 3,979.24, 5,970.30 and 1,382.20 is: 2,073.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.24 : 5,970.30 = 1,382.20 : x
  2. Step 2: Convert to fraction form
    3,979.24/5,970.30 = 1,382.20/x
  3. Step 3: Cross multiply
    3,979.24x = 5,970.30 × 1,382.20
  4. Step 4: Simplify right side
    3,979.24x = 8,252,148.66
  5. Step 5: Solve for x
    x = 8,252,148.66/3,979.24
  6. Step 6: Final answer
    x = 2,073.80

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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.