Home / 2,786.27-4,179.65-936.72

Finding the Fourth Proportional to 2,786.27, 4,179.65 and 936.72

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Solution

The fourth proportional to 2,786.27, 4,179.65 and 936.72 is: 1,405.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.27 : 4,179.65 = 936.72 : x
  2. Step 2: Convert to fraction form
    2,786.27/4,179.65 = 936.72/x
  3. Step 3: Cross multiply
    2,786.27x = 4,179.65 × 936.72
  4. Step 4: Simplify right side
    2,786.27x = 3,915,157.06
  5. Step 5: Solve for x
    x = 3,915,157.06/2,786.27
  6. Step 6: Final answer
    x = 1,405.16

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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.