Home / 2,786.45-4,178.19-936.95

Finding the Fourth Proportional to 2,786.45, 4,178.19 and 936.95

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Solution

The fourth proportional to 2,786.45, 4,178.19 and 936.95 is: 1,404.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.45 : 4,178.19 = 936.95 : x
  2. Step 2: Convert to fraction form
    2,786.45/4,178.19 = 936.95/x
  3. Step 3: Cross multiply
    2,786.45x = 4,178.19 × 936.95
  4. Step 4: Simplify right side
    2,786.45x = 3,914,755.12
  5. Step 5: Solve for x
    x = 3,914,755.12/2,786.45
  6. Step 6: Final answer
    x = 1,404.93

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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.