Home / 3,418.82-4,717.89-1,906.40

Finding the Fourth Proportional to 3,418.82, 4,717.89 and 1,906.40

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Solution

The fourth proportional to 3,418.82, 4,717.89 and 1,906.40 is: 2,630.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.82 : 4,717.89 = 1,906.40 : x
  2. Step 2: Convert to fraction form
    3,418.82/4,717.89 = 1,906.40/x
  3. Step 3: Cross multiply
    3,418.82x = 4,717.89 × 1,906.40
  4. Step 4: Simplify right side
    3,418.82x = 8,994,161.91
  5. Step 5: Solve for x
    x = 8,994,161.91/3,418.82
  6. Step 6: Final answer
    x = 2,630.78

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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.