Home / 2,630.26-3,938.10-1,979.02

Finding the Fourth Proportional to 2,630.26, 3,938.10 and 1,979.02

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Solution

The fourth proportional to 2,630.26, 3,938.10 and 1,979.02 is: 2,963.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,630.26 : 3,938.10 = 1,979.02 : x
  2. Step 2: Convert to fraction form
    2,630.26/3,938.10 = 1,979.02/x
  3. Step 3: Cross multiply
    2,630.26x = 3,938.10 × 1,979.02
  4. Step 4: Simplify right side
    2,630.26x = 7,793,578.66
  5. Step 5: Solve for x
    x = 7,793,578.66/2,630.26
  6. Step 6: Final answer
    x = 2,963.04

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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.