Home / 2,738.78-3,778.94-1,619.16

Finding the Fourth Proportional to 2,738.78, 3,778.94 and 1,619.16

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Solution

The fourth proportional to 2,738.78, 3,778.94 and 1,619.16 is: 2,234.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,738.78 : 3,778.94 = 1,619.16 : x
  2. Step 2: Convert to fraction form
    2,738.78/3,778.94 = 1,619.16/x
  3. Step 3: Cross multiply
    2,738.78x = 3,778.94 × 1,619.16
  4. Step 4: Simplify right side
    2,738.78x = 6,118,708.49
  5. Step 5: Solve for x
    x = 6,118,708.49/2,738.78
  6. Step 6: Final answer
    x = 2,234.10

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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.