Home / 8,139.18-11,241.24-5,481.96

Finding the Fourth Proportional to 8,139.18, 11,241.24 and 5,481.96

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Solution

The fourth proportional to 8,139.18, 11,241.24 and 5,481.96 is: 7,571.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.18 : 11,241.24 = 5,481.96 : x
  2. Step 2: Convert to fraction form
    8,139.18/11,241.24 = 5,481.96/x
  3. Step 3: Cross multiply
    8,139.18x = 11,241.24 × 5,481.96
  4. Step 4: Simplify right side
    8,139.18x = 61,624,028.03
  5. Step 5: Solve for x
    x = 61,624,028.03/8,139.18
  6. Step 6: Final answer
    x = 7,571.28

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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.