Home / 2,629.05-3,934.45-2,107.81

Finding the Fourth Proportional to 2,629.05, 3,934.45 and 2,107.81

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Solution

The fourth proportional to 2,629.05, 3,934.45 and 2,107.81 is: 3,154.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.05 : 3,934.45 = 2,107.81 : x
  2. Step 2: Convert to fraction form
    2,629.05/3,934.45 = 2,107.81/x
  3. Step 3: Cross multiply
    2,629.05x = 3,934.45 × 2,107.81
  4. Step 4: Simplify right side
    2,629.05x = 8,293,073.05
  5. Step 5: Solve for x
    x = 8,293,073.05/2,629.05
  6. Step 6: Final answer
    x = 3,154.40

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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.