Home / 2,629.45-3,943.09-2,107.81

Finding the Fourth Proportional to 2,629.45, 3,943.09 and 2,107.81

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Solution

The fourth proportional to 2,629.45, 3,943.09 and 2,107.81 is: 3,160.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.45 : 3,943.09 = 2,107.81 : x
  2. Step 2: Convert to fraction form
    2,629.45/3,943.09 = 2,107.81/x
  3. Step 3: Cross multiply
    2,629.45x = 3,943.09 × 2,107.81
  4. Step 4: Simplify right side
    2,629.45x = 8,311,284.53
  5. Step 5: Solve for x
    x = 8,311,284.53/2,629.45
  6. Step 6: Final answer
    x = 3,160.85

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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.