Home / 3,979.09-5,968.63-1,382.05

Finding the Fourth Proportional to 3,979.09, 5,968.63 and 1,382.05

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Solution

The fourth proportional to 3,979.09, 5,968.63 and 1,382.05 is: 2,073.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.09 : 5,968.63 = 1,382.05 : x
  2. Step 2: Convert to fraction form
    3,979.09/5,968.63 = 1,382.05/x
  3. Step 3: Cross multiply
    3,979.09x = 5,968.63 × 1,382.05
  4. Step 4: Simplify right side
    3,979.09x = 8,248,915.25
  5. Step 5: Solve for x
    x = 8,248,915.25/3,979.09
  6. Step 6: Final answer
    x = 2,073.07

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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.