Home / 2,738.28-3,778.98-1,619.87

Finding the Fourth Proportional to 2,738.28, 3,778.98 and 1,619.87

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Solution

The fourth proportional to 2,738.28, 3,778.98 and 1,619.87 is: 2,235.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,738.28 : 3,778.98 = 1,619.87 : x
  2. Step 2: Convert to fraction form
    2,738.28/3,778.98 = 1,619.87/x
  3. Step 3: Cross multiply
    2,738.28x = 3,778.98 × 1,619.87
  4. Step 4: Simplify right side
    2,738.28x = 6,121,456.33
  5. Step 5: Solve for x
    x = 6,121,456.33/2,738.28
  6. Step 6: Final answer
    x = 2,235.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.