Home / 2,785.08-4,177.89-936.21

Finding the Fourth Proportional to 2,785.08, 4,177.89 and 936.21

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Solution

The fourth proportional to 2,785.08, 4,177.89 and 936.21 is: 1,404.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.08 : 4,177.89 = 936.21 : x
  2. Step 2: Convert to fraction form
    2,785.08/4,177.89 = 936.21/x
  3. Step 3: Cross multiply
    2,785.08x = 4,177.89 × 936.21
  4. Step 4: Simplify right side
    2,785.08x = 3,911,382.40
  5. Step 5: Solve for x
    x = 3,911,382.40/2,785.08
  6. Step 6: Final answer
    x = 1,404.41

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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.