Home / 2,785.32-4,178.68-936.44

Finding the Fourth Proportional to 2,785.32, 4,178.68 and 936.44

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Solution

The fourth proportional to 2,785.32, 4,178.68 and 936.44 is: 1,404.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.32 : 4,178.68 = 936.44 : x
  2. Step 2: Convert to fraction form
    2,785.32/4,178.68 = 936.44/x
  3. Step 3: Cross multiply
    2,785.32x = 4,178.68 × 936.44
  4. Step 4: Simplify right side
    2,785.32x = 3,913,083.10
  5. Step 5: Solve for x
    x = 3,913,083.10/2,785.32
  6. Step 6: Final answer
    x = 1,404.90

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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.