Home / 2,638.22-3,954.47-1,249.47

Finding the Fourth Proportional to 2,638.22, 3,954.47 and 1,249.47

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Solution

The fourth proportional to 2,638.22, 3,954.47 and 1,249.47 is: 1,872.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.22 : 3,954.47 = 1,249.47 : x
  2. Step 2: Convert to fraction form
    2,638.22/3,954.47 = 1,249.47/x
  3. Step 3: Cross multiply
    2,638.22x = 3,954.47 × 1,249.47
  4. Step 4: Simplify right side
    2,638.22x = 4,940,985.38
  5. Step 5: Solve for x
    x = 4,940,985.38/2,638.22
  6. Step 6: Final answer
    x = 1,872.85

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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.