Home / 3,881.08-5,821.64-1,107.80

Finding the Fourth Proportional to 3,881.08, 5,821.64 and 1,107.80

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Solution

The fourth proportional to 3,881.08, 5,821.64 and 1,107.80 is: 1,661.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.08 : 5,821.64 = 1,107.80 : x
  2. Step 2: Convert to fraction form
    3,881.08/5,821.64 = 1,107.80/x
  3. Step 3: Cross multiply
    3,881.08x = 5,821.64 × 1,107.80
  4. Step 4: Simplify right side
    3,881.08x = 6,449,212.79
  5. Step 5: Solve for x
    x = 6,449,212.79/3,881.08
  6. Step 6: Final answer
    x = 1,661.71

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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.