Home / 5,169.64-7,134.13-2,811.79

Finding the Fourth Proportional to 5,169.64, 7,134.13 and 2,811.79

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Solution

The fourth proportional to 5,169.64, 7,134.13 and 2,811.79 is: 3,880.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.64 : 7,134.13 = 2,811.79 : x
  2. Step 2: Convert to fraction form
    5,169.64/7,134.13 = 2,811.79/x
  3. Step 3: Cross multiply
    5,169.64x = 7,134.13 × 2,811.79
  4. Step 4: Simplify right side
    5,169.64x = 20,059,639.72
  5. Step 5: Solve for x
    x = 20,059,639.72/5,169.64
  6. Step 6: Final answer
    x = 3,880.28

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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.