Home / 2,136.10-2,947.42-1,251.92

Finding the Fourth Proportional to 2,136.10, 2,947.42 and 1,251.92

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Solution

The fourth proportional to 2,136.10, 2,947.42 and 1,251.92 is: 1,727.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.10 : 2,947.42 = 1,251.92 : x
  2. Step 2: Convert to fraction form
    2,136.10/2,947.42 = 1,251.92/x
  3. Step 3: Cross multiply
    2,136.10x = 2,947.42 × 1,251.92
  4. Step 4: Simplify right side
    2,136.10x = 3,689,934.05
  5. Step 5: Solve for x
    x = 3,689,934.05/2,136.10
  6. Step 6: Final answer
    x = 1,727.42

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1.5x scale

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.