Home / 3,996.81-5,515.29-2,228.18

Finding the Fourth Proportional to 3,996.81, 5,515.29 and 2,228.18

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Solution

The fourth proportional to 3,996.81, 5,515.29 and 2,228.18 is: 3,074.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.81 : 5,515.29 = 2,228.18 : x
  2. Step 2: Convert to fraction form
    3,996.81/5,515.29 = 2,228.18/x
  3. Step 3: Cross multiply
    3,996.81x = 5,515.29 × 2,228.18
  4. Step 4: Simplify right side
    3,996.81x = 12,289,031.30
  5. Step 5: Solve for x
    x = 12,289,031.30/3,996.81
  6. Step 6: Final answer
    x = 3,074.71

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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.