Home / 5,388.40-8,086.32-2,101.54

Finding the Fourth Proportional to 5,388.40, 8,086.32 and 2,101.54

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Solution

The fourth proportional to 5,388.40, 8,086.32 and 2,101.54 is: 3,153.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.40 : 8,086.32 = 2,101.54 : x
  2. Step 2: Convert to fraction form
    5,388.40/8,086.32 = 2,101.54/x
  3. Step 3: Cross multiply
    5,388.40x = 8,086.32 × 2,101.54
  4. Step 4: Simplify right side
    5,388.40x = 16,993,724.93
  5. Step 5: Solve for x
    x = 16,993,724.93/5,388.40
  6. Step 6: Final answer
    x = 3,153.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.