Home / 3,722.76-5,136.08-2,231.15

Finding the Fourth Proportional to 3,722.76, 5,136.08 and 2,231.15

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Solution

The fourth proportional to 3,722.76, 5,136.08 and 2,231.15 is: 3,078.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,722.76 : 5,136.08 = 2,231.15 : x
  2. Step 2: Convert to fraction form
    3,722.76/5,136.08 = 2,231.15/x
  3. Step 3: Cross multiply
    3,722.76x = 5,136.08 × 2,231.15
  4. Step 4: Simplify right side
    3,722.76x = 11,459,328.06
  5. Step 5: Solve for x
    x = 11,459,328.06/3,722.76
  6. Step 6: Final answer
    x = 3,078.18

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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.