Home / 3,912.31-5,864.79-1,313.43

Finding the Fourth Proportional to 3,912.31, 5,864.79 and 1,313.43

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Solution

The fourth proportional to 3,912.31, 5,864.79 and 1,313.43 is: 1,968.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.31 : 5,864.79 = 1,313.43 : x
  2. Step 2: Convert to fraction form
    3,912.31/5,864.79 = 1,313.43/x
  3. Step 3: Cross multiply
    3,912.31x = 5,864.79 × 1,313.43
  4. Step 4: Simplify right side
    3,912.31x = 7,702,991.13
  5. Step 5: Solve for x
    x = 7,702,991.13/3,912.31
  6. Step 6: Final answer
    x = 1,968.91

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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.