Home / 2,786.97-3,842.86-2,087.13

Finding the Fourth Proportional to 2,786.97, 3,842.86 and 2,087.13

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Solution

The fourth proportional to 2,786.97, 3,842.86 and 2,087.13 is: 2,877.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.97 : 3,842.86 = 2,087.13 : x
  2. Step 2: Convert to fraction form
    2,786.97/3,842.86 = 2,087.13/x
  3. Step 3: Cross multiply
    2,786.97x = 3,842.86 × 2,087.13
  4. Step 4: Simplify right side
    2,786.97x = 8,020,548.39
  5. Step 5: Solve for x
    x = 8,020,548.39/2,786.97
  6. Step 6: Final answer
    x = 2,877.87

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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.