Home / 1,912.92-2,639.96-1,073.69

Finding the Fourth Proportional to 1,912.92, 2,639.96 and 1,073.69

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Solution

The fourth proportional to 1,912.92, 2,639.96 and 1,073.69 is: 1,481.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.92 : 2,639.96 = 1,073.69 : x
  2. Step 2: Convert to fraction form
    1,912.92/2,639.96 = 1,073.69/x
  3. Step 3: Cross multiply
    1,912.92x = 2,639.96 × 1,073.69
  4. Step 4: Simplify right side
    1,912.92x = 2,834,498.65
  5. Step 5: Solve for x
    x = 2,834,498.65/1,912.92
  6. Step 6: Final answer
    x = 1,481.77

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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.