Home / 3,861.42-5,786.91-2,816.52

Finding the Fourth Proportional to 3,861.42, 5,786.91 and 2,816.52

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Solution

The fourth proportional to 3,861.42, 5,786.91 and 2,816.52 is: 4,220.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.42 : 5,786.91 = 2,816.52 : x
  2. Step 2: Convert to fraction form
    3,861.42/5,786.91 = 2,816.52/x
  3. Step 3: Cross multiply
    3,861.42x = 5,786.91 × 2,816.52
  4. Step 4: Simplify right side
    3,861.42x = 16,298,954.79
  5. Step 5: Solve for x
    x = 16,298,954.79/3,861.42
  6. Step 6: Final answer
    x = 4,220.97

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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.