Home / 2,136.28-2,947.90-1,251.96

Finding the Fourth Proportional to 2,136.28, 2,947.90 and 1,251.96

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Solution

The fourth proportional to 2,136.28, 2,947.90 and 1,251.96 is: 1,727.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.28 : 2,947.90 = 1,251.96 : x
  2. Step 2: Convert to fraction form
    2,136.28/2,947.90 = 1,251.96/x
  3. Step 3: Cross multiply
    2,136.28x = 2,947.90 × 1,251.96
  4. Step 4: Simplify right side
    2,136.28x = 3,690,652.88
  5. Step 5: Solve for x
    x = 3,690,652.88/2,136.28
  6. Step 6: Final answer
    x = 1,727.61

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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.