Home / 3,936.42-5,905.24-1,338.75

Finding the Fourth Proportional to 3,936.42, 5,905.24 and 1,338.75

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Solution

The fourth proportional to 3,936.42, 5,905.24 and 1,338.75 is: 2,008.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.42 : 5,905.24 = 1,338.75 : x
  2. Step 2: Convert to fraction form
    3,936.42/5,905.24 = 1,338.75/x
  3. Step 3: Cross multiply
    3,936.42x = 5,905.24 × 1,338.75
  4. Step 4: Simplify right side
    3,936.42x = 7,905,636.70
  5. Step 5: Solve for x
    x = 7,905,636.70/3,936.42
  6. Step 6: Final answer
    x = 2,008.33

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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.