Home / 2,738.50-4,110.19-1,278.47

Finding the Fourth Proportional to 2,738.50, 4,110.19 and 1,278.47

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Solution

The fourth proportional to 2,738.50, 4,110.19 and 1,278.47 is: 1,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,738.50 : 4,110.19 = 1,278.47 : x
  2. Step 2: Convert to fraction form
    2,738.50/4,110.19 = 1,278.47/x
  3. Step 3: Cross multiply
    2,738.50x = 4,110.19 × 1,278.47
  4. Step 4: Simplify right side
    2,738.50x = 5,254,761.69
  5. Step 5: Solve for x
    x = 5,254,761.69/2,738.50
  6. Step 6: Final answer
    x = 1,918.85

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1.5x scale

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.