Home / 3,918.76-5,872.80-2,161.13

Finding the Fourth Proportional to 3,918.76, 5,872.80 and 2,161.13

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Solution

The fourth proportional to 3,918.76, 5,872.80 and 2,161.13 is: 3,238.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.76 : 5,872.80 = 2,161.13 : x
  2. Step 2: Convert to fraction form
    3,918.76/5,872.80 = 2,161.13/x
  3. Step 3: Cross multiply
    3,918.76x = 5,872.80 × 2,161.13
  4. Step 4: Simplify right side
    3,918.76x = 12,691,844.09
  5. Step 5: Solve for x
    x = 12,691,844.09/3,918.76
  6. Step 6: Final answer
    x = 3,238.74

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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.