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Finding the Fourth Proportional to 3,855.96, 5,786.10 and 1,908.18

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Solution

The fourth proportional to 3,855.96, 5,786.10 and 1,908.18 is: 2,863.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.96 : 5,786.10 = 1,908.18 : x
  2. Step 2: Convert to fraction form
    3,855.96/5,786.10 = 1,908.18/x
  3. Step 3: Cross multiply
    3,855.96x = 5,786.10 × 1,908.18
  4. Step 4: Simplify right side
    3,855.96x = 11,040,920.30
  5. Step 5: Solve for x
    x = 11,040,920.30/3,855.96
  6. Step 6: Final answer
    x = 2,863.34

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1.5x scale

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.