Home / 3,687.21-5,530.82-1,221.38

Finding the Fourth Proportional to 3,687.21, 5,530.82 and 1,221.38

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Solution

The fourth proportional to 3,687.21, 5,530.82 and 1,221.38 is: 1,832.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.21 : 5,530.82 = 1,221.38 : x
  2. Step 2: Convert to fraction form
    3,687.21/5,530.82 = 1,221.38/x
  3. Step 3: Cross multiply
    3,687.21x = 5,530.82 × 1,221.38
  4. Step 4: Simplify right side
    3,687.21x = 6,755,199.17
  5. Step 5: Solve for x
    x = 6,755,199.17/3,687.21
  6. Step 6: Final answer
    x = 1,832.06

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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.