Home / 3,941.28-5,912.82-1,309.62

Finding the Fourth Proportional to 3,941.28, 5,912.82 and 1,309.62

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Solution

The fourth proportional to 3,941.28, 5,912.82 and 1,309.62 is: 1,964.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,941.28 : 5,912.82 = 1,309.62 : x
  2. Step 2: Convert to fraction form
    3,941.28/5,912.82 = 1,309.62/x
  3. Step 3: Cross multiply
    3,941.28x = 5,912.82 × 1,309.62
  4. Step 4: Simplify right side
    3,941.28x = 7,743,547.33
  5. Step 5: Solve for x
    x = 7,743,547.33/3,941.28
  6. Step 6: Final answer
    x = 1,964.73

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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.