Home / 3,895.12-5,842.60-1,121.75

Finding the Fourth Proportional to 3,895.12, 5,842.60 and 1,121.75

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Solution

The fourth proportional to 3,895.12, 5,842.60 and 1,121.75 is: 1,682.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.12 : 5,842.60 = 1,121.75 : x
  2. Step 2: Convert to fraction form
    3,895.12/5,842.60 = 1,121.75/x
  3. Step 3: Cross multiply
    3,895.12x = 5,842.60 × 1,121.75
  4. Step 4: Simplify right side
    3,895.12x = 6,553,926.44
  5. Step 5: Solve for x
    x = 6,553,926.44/3,895.12
  6. Step 6: Final answer
    x = 1,682.60

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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.