Home / 2,136.78-3,183.92-1,903.88

Finding the Fourth Proportional to 2,136.78, 3,183.92 and 1,903.88

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Solution

The fourth proportional to 2,136.78, 3,183.92 and 1,903.88 is: 2,836.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.78 : 3,183.92 = 1,903.88 : x
  2. Step 2: Convert to fraction form
    2,136.78/3,183.92 = 1,903.88/x
  3. Step 3: Cross multiply
    2,136.78x = 3,183.92 × 1,903.88
  4. Step 4: Simplify right side
    2,136.78x = 6,061,801.61
  5. Step 5: Solve for x
    x = 6,061,801.61/2,136.78
  6. Step 6: Final answer
    x = 2,836.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.