Home / 2,785.12-4,178.16-936.04

Finding the Fourth Proportional to 2,785.12, 4,178.16 and 936.04

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Solution

The fourth proportional to 2,785.12, 4,178.16 and 936.04 is: 1,404.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.12 : 4,178.16 = 936.04 : x
  2. Step 2: Convert to fraction form
    2,785.12/4,178.16 = 936.04/x
  3. Step 3: Cross multiply
    2,785.12x = 4,178.16 × 936.04
  4. Step 4: Simplify right side
    2,785.12x = 3,910,924.89
  5. Step 5: Solve for x
    x = 3,910,924.89/2,785.12
  6. Step 6: Final answer
    x = 1,404.22

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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.