Home / 3,984.29-5,980.23-1,905.42

Finding the Fourth Proportional to 3,984.29, 5,980.23 and 1,905.42

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Solution

The fourth proportional to 3,984.29, 5,980.23 and 1,905.42 is: 2,859.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.29 : 5,980.23 = 1,905.42 : x
  2. Step 2: Convert to fraction form
    3,984.29/5,980.23 = 1,905.42/x
  3. Step 3: Cross multiply
    3,984.29x = 5,980.23 × 1,905.42
  4. Step 4: Simplify right side
    3,984.29x = 11,394,872.27
  5. Step 5: Solve for x
    x = 11,394,872.27/3,984.29
  6. Step 6: Final answer
    x = 2,859.95

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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.