Home / 2,738.82-4,107-1,278.36

Finding the Fourth Proportional to 2,738.82, 4,107 and 1,278.36

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Solution

The fourth proportional to 2,738.82, 4,107 and 1,278.36 is: 1,916.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,738.82 : 4,107 = 1,278.36 : x
  2. Step 2: Convert to fraction form
    2,738.82/4,107 = 1,278.36/x
  3. Step 3: Cross multiply
    2,738.82x = 4,107 × 1,278.36
  4. Step 4: Simplify right side
    2,738.82x = 5,250,224.52
  5. Step 5: Solve for x
    x = 5,250,224.52/2,738.82
  6. Step 6: Final answer
    x = 1,916.97

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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.