Home / 3,991.46-5,984.61-1,911.41

Finding the Fourth Proportional to 3,991.46, 5,984.61 and 1,911.41

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Solution

The fourth proportional to 3,991.46, 5,984.61 and 1,911.41 is: 2,865.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.46 : 5,984.61 = 1,911.41 : x
  2. Step 2: Convert to fraction form
    3,991.46/5,984.61 = 1,911.41/x
  3. Step 3: Cross multiply
    3,991.46x = 5,984.61 × 1,911.41
  4. Step 4: Simplify right side
    3,991.46x = 11,439,028.75
  5. Step 5: Solve for x
    x = 11,439,028.75/3,991.46
  6. Step 6: Final answer
    x = 2,865.88

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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.