Home / 5,169.66-7,134.15-2,811.81

Finding the Fourth Proportional to 5,169.66, 7,134.15 and 2,811.81

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Solution

The fourth proportional to 5,169.66, 7,134.15 and 2,811.81 is: 3,880.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.66 : 7,134.15 = 2,811.81 : x
  2. Step 2: Convert to fraction form
    5,169.66/7,134.15 = 2,811.81/x
  3. Step 3: Cross multiply
    5,169.66x = 7,134.15 × 2,811.81
  4. Step 4: Simplify right side
    5,169.66x = 20,059,874.31
  5. Step 5: Solve for x
    x = 20,059,874.31/5,169.66
  6. Step 6: Final answer
    x = 3,880.31

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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.