Home / 5,143.97-7,098.68-2,786.12

Finding the Fourth Proportional to 5,143.97, 7,098.68 and 2,786.12

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Solution

The fourth proportional to 5,143.97, 7,098.68 and 2,786.12 is: 3,844.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.97 : 7,098.68 = 2,786.12 : x
  2. Step 2: Convert to fraction form
    5,143.97/7,098.68 = 2,786.12/x
  3. Step 3: Cross multiply
    5,143.97x = 7,098.68 × 2,786.12
  4. Step 4: Simplify right side
    5,143.97x = 19,777,724.90
  5. Step 5: Solve for x
    x = 19,777,724.90/5,143.97
  6. Step 6: Final answer
    x = 3,844.84

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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.