Home / 3,722.75-5,136.09-2,231.15

Finding the Fourth Proportional to 3,722.75, 5,136.09 and 2,231.15

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Solution

The fourth proportional to 3,722.75, 5,136.09 and 2,231.15 is: 3,078.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,722.75 : 5,136.09 = 2,231.15 : x
  2. Step 2: Convert to fraction form
    3,722.75/5,136.09 = 2,231.15/x
  3. Step 3: Cross multiply
    3,722.75x = 5,136.09 × 2,231.15
  4. Step 4: Simplify right side
    3,722.75x = 11,459,361.52
  5. Step 5: Solve for x
    x = 11,459,361.52/3,722.75
  6. Step 6: Final answer
    x = 3,078.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.