Home / 3,895.80-5,842.34-1,121.73

Finding the Fourth Proportional to 3,895.80, 5,842.34 and 1,121.73

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Solution

The fourth proportional to 3,895.80, 5,842.34 and 1,121.73 is: 1,682.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.80 : 5,842.34 = 1,121.73 : x
  2. Step 2: Convert to fraction form
    3,895.80/5,842.34 = 1,121.73/x
  3. Step 3: Cross multiply
    3,895.80x = 5,842.34 × 1,121.73
  4. Step 4: Simplify right side
    3,895.80x = 6,553,522.44
  5. Step 5: Solve for x
    x = 6,553,522.44/3,895.80
  6. Step 6: Final answer
    x = 1,682.20

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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.