Home / 3,786.27-5,679.45-1,189.21

Finding the Fourth Proportional to 3,786.27, 5,679.45 and 1,189.21

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Solution

The fourth proportional to 3,786.27, 5,679.45 and 1,189.21 is: 1,783.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.27 : 5,679.45 = 1,189.21 : x
  2. Step 2: Convert to fraction form
    3,786.27/5,679.45 = 1,189.21/x
  3. Step 3: Cross multiply
    3,786.27x = 5,679.45 × 1,189.21
  4. Step 4: Simplify right side
    3,786.27x = 6,754,030.34
  5. Step 5: Solve for x
    x = 6,754,030.34/3,786.27
  6. Step 6: Final answer
    x = 1,783.82

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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.