Home / 3,912.81-5,863.76-2,812.02

Finding the Fourth Proportional to 3,912.81, 5,863.76 and 2,812.02

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Solution

The fourth proportional to 3,912.81, 5,863.76 and 2,812.02 is: 4,214.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.81 : 5,863.76 = 2,812.02 : x
  2. Step 2: Convert to fraction form
    3,912.81/5,863.76 = 2,812.02/x
  3. Step 3: Cross multiply
    3,912.81x = 5,863.76 × 2,812.02
  4. Step 4: Simplify right side
    3,912.81x = 16,488,996.34
  5. Step 5: Solve for x
    x = 16,488,996.34/3,912.81
  6. Step 6: Final answer
    x = 4,214.11

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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.