Home / 3,722.74-5,136.10-2,231.15

Finding the Fourth Proportional to 3,722.74, 5,136.10 and 2,231.15

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Solution

The fourth proportional to 3,722.74, 5,136.10 and 2,231.15 is: 3,078.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,722.74 : 5,136.10 = 2,231.15 : x
  2. Step 2: Convert to fraction form
    3,722.74/5,136.10 = 2,231.15/x
  3. Step 3: Cross multiply
    3,722.74x = 5,136.10 × 2,231.15
  4. Step 4: Simplify right side
    3,722.74x = 11,459,378.26
  5. Step 5: Solve for x
    x = 11,459,378.26/3,722.74
  6. Step 6: Final answer
    x = 3,078.21

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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.