Home / 2,738.48-4,101.96-1,278.80

Finding the Fourth Proportional to 2,738.48, 4,101.96 and 1,278.80

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Solution

The fourth proportional to 2,738.48, 4,101.96 and 1,278.80 is: 1,915.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,738.48 : 4,101.96 = 1,278.80 : x
  2. Step 2: Convert to fraction form
    2,738.48/4,101.96 = 1,278.80/x
  3. Step 3: Cross multiply
    2,738.48x = 4,101.96 × 1,278.80
  4. Step 4: Simplify right side
    2,738.48x = 5,245,586.45
  5. Step 5: Solve for x
    x = 5,245,586.45/2,738.48
  6. Step 6: Final answer
    x = 1,915.51

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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.