Home / 3,881.07-5,821.20-1,107.56

Finding the Fourth Proportional to 3,881.07, 5,821.20 and 1,107.56

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Solution

The fourth proportional to 3,881.07, 5,821.20 and 1,107.56 is: 1,661.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.07 : 5,821.20 = 1,107.56 : x
  2. Step 2: Convert to fraction form
    3,881.07/5,821.20 = 1,107.56/x
  3. Step 3: Cross multiply
    3,881.07x = 5,821.20 × 1,107.56
  4. Step 4: Simplify right side
    3,881.07x = 6,447,342.83
  5. Step 5: Solve for x
    x = 6,447,342.83/3,881.07
  6. Step 6: Final answer
    x = 1,661.23

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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.