Home / 3,687.72-5,530.26-1,222.20

Finding the Fourth Proportional to 3,687.72, 5,530.26 and 1,222.20

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Solution

The fourth proportional to 3,687.72, 5,530.26 and 1,222.20 is: 1,832.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.72 : 5,530.26 = 1,222.20 : x
  2. Step 2: Convert to fraction form
    3,687.72/5,530.26 = 1,222.20/x
  3. Step 3: Cross multiply
    3,687.72x = 5,530.26 × 1,222.20
  4. Step 4: Simplify right side
    3,687.72x = 6,759,083.77
  5. Step 5: Solve for x
    x = 6,759,083.77/3,687.72
  6. Step 6: Final answer
    x = 1,832.86

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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.