Home / 3,942.81-5,917.86-1,996.38

Finding the Fourth Proportional to 3,942.81, 5,917.86 and 1,996.38

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Solution

The fourth proportional to 3,942.81, 5,917.86 and 1,996.38 is: 2,996.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.81 : 5,917.86 = 1,996.38 : x
  2. Step 2: Convert to fraction form
    3,942.81/5,917.86 = 1,996.38/x
  3. Step 3: Cross multiply
    3,942.81x = 5,917.86 × 1,996.38
  4. Step 4: Simplify right side
    3,942.81x = 11,814,297.35
  5. Step 5: Solve for x
    x = 11,814,297.35/3,942.81
  6. Step 6: Final answer
    x = 2,996.42

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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.