Home / 1,991.38-2,983.73-1,297.01

Finding the Fourth Proportional to 1,991.38, 2,983.73 and 1,297.01

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Solution

The fourth proportional to 1,991.38, 2,983.73 and 1,297.01 is: 1,943.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.38 : 2,983.73 = 1,297.01 : x
  2. Step 2: Convert to fraction form
    1,991.38/2,983.73 = 1,297.01/x
  3. Step 3: Cross multiply
    1,991.38x = 2,983.73 × 1,297.01
  4. Step 4: Simplify right side
    1,991.38x = 3,869,906.24
  5. Step 5: Solve for x
    x = 3,869,906.24/1,991.38
  6. Step 6: Final answer
    x = 1,943.33

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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.