Home / 3,996.36-5,515.38-2,318.28

Finding the Fourth Proportional to 3,996.36, 5,515.38 and 2,318.28

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Solution

The fourth proportional to 3,996.36, 5,515.38 and 2,318.28 is: 3,199.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.36 : 5,515.38 = 2,318.28 : x
  2. Step 2: Convert to fraction form
    3,996.36/5,515.38 = 2,318.28/x
  3. Step 3: Cross multiply
    3,996.36x = 5,515.38 × 2,318.28
  4. Step 4: Simplify right side
    3,996.36x = 12,786,195.15
  5. Step 5: Solve for x
    x = 12,786,195.15/3,996.36
  6. Step 6: Final answer
    x = 3,199.46

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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.