Home / 3,986.00-5,979.95-1,905.41

Finding the Fourth Proportional to 3,986.00, 5,979.95 and 1,905.41

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Solution

The fourth proportional to 3,986.00, 5,979.95 and 1,905.41 is: 2,858.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.00 : 5,979.95 = 1,905.41 : x
  2. Step 2: Convert to fraction form
    3,986.00/5,979.95 = 1,905.41/x
  3. Step 3: Cross multiply
    3,986.00x = 5,979.95 × 1,905.41
  4. Step 4: Simplify right side
    3,986.00x = 11,394,217.10
  5. Step 5: Solve for x
    x = 11,394,217.10/3,986.00
  6. Step 6: Final answer
    x = 2,858.56

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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.