Home / 1,912.82-2,639.28-1,250.64

Finding the Fourth Proportional to 1,912.82, 2,639.28 and 1,250.64

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Solution

The fourth proportional to 1,912.82, 2,639.28 and 1,250.64 is: 1,725.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.82 : 2,639.28 = 1,250.64 : x
  2. Step 2: Convert to fraction form
    1,912.82/2,639.28 = 1,250.64/x
  3. Step 3: Cross multiply
    1,912.82x = 2,639.28 × 1,250.64
  4. Step 4: Simplify right side
    1,912.82x = 3,300,789.14
  5. Step 5: Solve for x
    x = 3,300,789.14/1,912.82
  6. Step 6: Final answer
    x = 1,725.62

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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.