Home / 3,786.98-5,681.37-1,189.91

Finding the Fourth Proportional to 3,786.98, 5,681.37 and 1,189.91

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Solution

The fourth proportional to 3,786.98, 5,681.37 and 1,189.91 is: 1,785.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.98 : 5,681.37 = 1,189.91 : x
  2. Step 2: Convert to fraction form
    3,786.98/5,681.37 = 1,189.91/x
  3. Step 3: Cross multiply
    3,786.98x = 5,681.37 × 1,189.91
  4. Step 4: Simplify right side
    3,786.98x = 6,760,318.98
  5. Step 5: Solve for x
    x = 6,760,318.98/3,786.98
  6. Step 6: Final answer
    x = 1,785.15

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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.