Home / 5,169.69-7,134.35-2,811.92

Finding the Fourth Proportional to 5,169.69, 7,134.35 and 2,811.92

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Solution

The fourth proportional to 5,169.69, 7,134.35 and 2,811.92 is: 3,880.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.69 : 7,134.35 = 2,811.92 : x
  2. Step 2: Convert to fraction form
    5,169.69/7,134.35 = 2,811.92/x
  3. Step 3: Cross multiply
    5,169.69x = 7,134.35 × 2,811.92
  4. Step 4: Simplify right side
    5,169.69x = 20,061,171.72
  5. Step 5: Solve for x
    x = 20,061,171.72/5,169.69
  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.