Home / 2,638.29-3,960.49-1,543.44

Finding the Fourth Proportional to 2,638.29, 3,960.49 and 1,543.44

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Solution

The fourth proportional to 2,638.29, 3,960.49 and 1,543.44 is: 2,316.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.29 : 3,960.49 = 1,543.44 : x
  2. Step 2: Convert to fraction form
    2,638.29/3,960.49 = 1,543.44/x
  3. Step 3: Cross multiply
    2,638.29x = 3,960.49 × 1,543.44
  4. Step 4: Simplify right side
    2,638.29x = 6,112,778.69
  5. Step 5: Solve for x
    x = 6,112,778.69/2,638.29
  6. Step 6: Final answer
    x = 2,316.95

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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.