Home / 2,687.72-4,027.26-2,221.16

Finding the Fourth Proportional to 2,687.72, 4,027.26 and 2,221.16

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Solution

The fourth proportional to 2,687.72, 4,027.26 and 2,221.16 is: 3,328.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.72 : 4,027.26 = 2,221.16 : x
  2. Step 2: Convert to fraction form
    2,687.72/4,027.26 = 2,221.16/x
  3. Step 3: Cross multiply
    2,687.72x = 4,027.26 × 2,221.16
  4. Step 4: Simplify right side
    2,687.72x = 8,945,188.82
  5. Step 5: Solve for x
    x = 8,945,188.82/2,687.72
  6. Step 6: Final answer
    x = 3,328.17

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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.