Home / 3,867.80-5,799.09-1,786.66

Finding the Fourth Proportional to 3,867.80, 5,799.09 and 1,786.66

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Solution

The fourth proportional to 3,867.80, 5,799.09 and 1,786.66 is: 2,678.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.80 : 5,799.09 = 1,786.66 : x
  2. Step 2: Convert to fraction form
    3,867.80/5,799.09 = 1,786.66/x
  3. Step 3: Cross multiply
    3,867.80x = 5,799.09 × 1,786.66
  4. Step 4: Simplify right side
    3,867.80x = 10,360,987.64
  5. Step 5: Solve for x
    x = 10,360,987.64/3,867.80
  6. Step 6: Final answer
    x = 2,678.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.