Home / 3,855.77-5,781.83-2,211.87

Finding the Fourth Proportional to 3,855.77, 5,781.83 and 2,211.87

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Solution

The fourth proportional to 3,855.77, 5,781.83 and 2,211.87 is: 3,316.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.77 : 5,781.83 = 2,211.87 : x
  2. Step 2: Convert to fraction form
    3,855.77/5,781.83 = 2,211.87/x
  3. Step 3: Cross multiply
    3,855.77x = 5,781.83 × 2,211.87
  4. Step 4: Simplify right side
    3,855.77x = 12,788,645.26
  5. Step 5: Solve for x
    x = 12,788,645.26/3,855.77
  6. Step 6: Final answer
    x = 3,316.76

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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.