Home / 1,912.68-2,639.30-1,073.21

Finding the Fourth Proportional to 1,912.68, 2,639.30 and 1,073.21

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Solution

The fourth proportional to 1,912.68, 2,639.30 and 1,073.21 is: 1,480.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.68 : 2,639.30 = 1,073.21 : x
  2. Step 2: Convert to fraction form
    1,912.68/2,639.30 = 1,073.21/x
  3. Step 3: Cross multiply
    1,912.68x = 2,639.30 × 1,073.21
  4. Step 4: Simplify right side
    1,912.68x = 2,832,504.59
  5. Step 5: Solve for x
    x = 2,832,504.59/1,912.68
  6. Step 6: Final answer
    x = 1,480.91

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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.