Home / 5,169.81-7,134.38-2,811.97

Finding the Fourth Proportional to 5,169.81, 7,134.38 and 2,811.97

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Solution

The fourth proportional to 5,169.81, 7,134.38 and 2,811.97 is: 3,880.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.81 : 7,134.38 = 2,811.97 : x
  2. Step 2: Convert to fraction form
    5,169.81/7,134.38 = 2,811.97/x
  3. Step 3: Cross multiply
    5,169.81x = 7,134.38 × 2,811.97
  4. Step 4: Simplify right side
    5,169.81x = 20,061,662.53
  5. Step 5: Solve for x
    x = 20,061,662.53/5,169.81
  6. Step 6: Final answer
    x = 3,880.54

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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.