Home / 5,169.81-7,134.34-2,812

Finding the Fourth Proportional to 5,169.81, 7,134.34 and 2,812

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Solution

The fourth proportional to 5,169.81, 7,134.34 and 2,812 is: 3,880.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.81 : 7,134.34 = 2,812 : x
  2. Step 2: Convert to fraction form
    5,169.81/7,134.34 = 2,812/x
  3. Step 3: Cross multiply
    5,169.81x = 7,134.34 × 2,812
  4. Step 4: Simplify right side
    5,169.81x = 20,061,764.08
  5. Step 5: Solve for x
    x = 20,061,764.08/5,169.81
  6. Step 6: Final answer
    x = 3,880.56

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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.