Home / 3,786.83-5,679.88-1,189.31

Finding the Fourth Proportional to 3,786.83, 5,679.88 and 1,189.31

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Solution

The fourth proportional to 3,786.83, 5,679.88 and 1,189.31 is: 1,783.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.83 : 5,679.88 = 1,189.31 : x
  2. Step 2: Convert to fraction form
    3,786.83/5,679.88 = 1,189.31/x
  3. Step 3: Cross multiply
    3,786.83x = 5,679.88 × 1,189.31
  4. Step 4: Simplify right side
    3,786.83x = 6,755,138.08
  5. Step 5: Solve for x
    x = 6,755,138.08/3,786.83
  6. Step 6: Final answer
    x = 1,783.85

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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.