Home / 2,629.97-3,939.59-1,639.54

Finding the Fourth Proportional to 2,629.97, 3,939.59 and 1,639.54

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Solution

The fourth proportional to 2,629.97, 3,939.59 and 1,639.54 is: 2,455.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.97 : 3,939.59 = 1,639.54 : x
  2. Step 2: Convert to fraction form
    2,629.97/3,939.59 = 1,639.54/x
  3. Step 3: Cross multiply
    2,629.97x = 3,939.59 × 1,639.54
  4. Step 4: Simplify right side
    2,629.97x = 6,459,107.19
  5. Step 5: Solve for x
    x = 6,459,107.19/2,629.97
  6. Step 6: Final answer
    x = 2,455.96

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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.