Home / 2,786.68-3,845.78-1,607.80

Finding the Fourth Proportional to 2,786.68, 3,845.78 and 1,607.80

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Solution

The fourth proportional to 2,786.68, 3,845.78 and 1,607.80 is: 2,218.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.68 : 3,845.78 = 1,607.80 : x
  2. Step 2: Convert to fraction form
    2,786.68/3,845.78 = 1,607.80/x
  3. Step 3: Cross multiply
    2,786.68x = 3,845.78 × 1,607.80
  4. Step 4: Simplify right side
    2,786.68x = 6,183,245.08
  5. Step 5: Solve for x
    x = 6,183,245.08/2,786.68
  6. Step 6: Final answer
    x = 2,218.86

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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.