Home / 3,943.76-5,908.35-1,991.30

Finding the Fourth Proportional to 3,943.76, 5,908.35 and 1,991.30

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Solution

The fourth proportional to 3,943.76, 5,908.35 and 1,991.30 is: 2,983.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.76 : 5,908.35 = 1,991.30 : x
  2. Step 2: Convert to fraction form
    3,943.76/5,908.35 = 1,991.30/x
  3. Step 3: Cross multiply
    3,943.76x = 5,908.35 × 1,991.30
  4. Step 4: Simplify right side
    3,943.76x = 11,765,297.36
  5. Step 5: Solve for x
    x = 11,765,297.36/3,943.76
  6. Step 6: Final answer
    x = 2,983.27

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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.