Home / 2,105.88-2,906.14-1,161.80

Finding the Fourth Proportional to 2,105.88, 2,906.14 and 1,161.80

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Solution

The fourth proportional to 2,105.88, 2,906.14 and 1,161.80 is: 1,603.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,105.88 : 2,906.14 = 1,161.80 : x
  2. Step 2: Convert to fraction form
    2,105.88/2,906.14 = 1,161.80/x
  3. Step 3: Cross multiply
    2,105.88x = 2,906.14 × 1,161.80
  4. Step 4: Simplify right side
    2,105.88x = 3,376,353.45
  5. Step 5: Solve for x
    x = 3,376,353.45/2,105.88
  6. Step 6: Final answer
    x = 1,603.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.