Home / 5,109.76-7,662.24-2,186.56

Finding the Fourth Proportional to 5,109.76, 7,662.24 and 2,186.56

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Solution

The fourth proportional to 5,109.76, 7,662.24 and 2,186.56 is: 3,278.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.76 : 7,662.24 = 2,186.56 : x
  2. Step 2: Convert to fraction form
    5,109.76/7,662.24 = 2,186.56/x
  3. Step 3: Cross multiply
    5,109.76x = 7,662.24 × 2,186.56
  4. Step 4: Simplify right side
    5,109.76x = 16,753,947.49
  5. Step 5: Solve for x
    x = 16,753,947.49/5,109.76
  6. Step 6: Final answer
    x = 3,278.81

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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.