Home / 3,912.85-5,865.20-2,066.05

Finding the Fourth Proportional to 3,912.85, 5,865.20 and 2,066.05

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Solution

The fourth proportional to 3,912.85, 5,865.20 and 2,066.05 is: 3,096.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.85 : 5,865.20 = 2,066.05 : x
  2. Step 2: Convert to fraction form
    3,912.85/5,865.20 = 2,066.05/x
  3. Step 3: Cross multiply
    3,912.85x = 5,865.20 × 2,066.05
  4. Step 4: Simplify right side
    3,912.85x = 12,117,786.13
  5. Step 5: Solve for x
    x = 12,117,786.13/3,912.85
  6. Step 6: Final answer
    x = 3,096.92

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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.