Home / 2,107.31-2,908.09-1,175.81

Finding the Fourth Proportional to 2,107.31, 2,908.09 and 1,175.81

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Solution

The fourth proportional to 2,107.31, 2,908.09 and 1,175.81 is: 1,622.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.31 : 2,908.09 = 1,175.81 : x
  2. Step 2: Convert to fraction form
    2,107.31/2,908.09 = 1,175.81/x
  3. Step 3: Cross multiply
    2,107.31x = 2,908.09 × 1,175.81
  4. Step 4: Simplify right side
    2,107.31x = 3,419,361.30
  5. Step 5: Solve for x
    x = 3,419,361.30/2,107.31
  6. Step 6: Final answer
    x = 1,622.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.