Home / 3,881.40-5,821.23-1,108.02

Finding the Fourth Proportional to 3,881.40, 5,821.23 and 1,108.02

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Solution

The fourth proportional to 3,881.40, 5,821.23 and 1,108.02 is: 1,661.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.40 : 5,821.23 = 1,108.02 : x
  2. Step 2: Convert to fraction form
    3,881.40/5,821.23 = 1,108.02/x
  3. Step 3: Cross multiply
    3,881.40x = 5,821.23 × 1,108.02
  4. Step 4: Simplify right side
    3,881.40x = 6,450,039.26
  5. Step 5: Solve for x
    x = 6,450,039.26/3,881.40
  6. Step 6: Final answer
    x = 1,661.78

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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.