Home / 3,912.87-5,865.66-1,962.81

Finding the Fourth Proportional to 3,912.87, 5,865.66 and 1,962.81

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Solution

The fourth proportional to 3,912.87, 5,865.66 and 1,962.81 is: 2,942.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.87 : 5,865.66 = 1,962.81 : x
  2. Step 2: Convert to fraction form
    3,912.87/5,865.66 = 1,962.81/x
  3. Step 3: Cross multiply
    3,912.87x = 5,865.66 × 1,962.81
  4. Step 4: Simplify right side
    3,912.87x = 11,513,176.10
  5. Step 5: Solve for x
    x = 11,513,176.10/3,912.87
  6. Step 6: Final answer
    x = 2,942.39

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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.