Home / 5,107.14-7,661.52-2,185.20

Finding the Fourth Proportional to 5,107.14, 7,661.52 and 2,185.20

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Solution

The fourth proportional to 5,107.14, 7,661.52 and 2,185.20 is: 3,278.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.14 : 7,661.52 = 2,185.20 : x
  2. Step 2: Convert to fraction form
    5,107.14/7,661.52 = 2,185.20/x
  3. Step 3: Cross multiply
    5,107.14x = 7,661.52 × 2,185.20
  4. Step 4: Simplify right side
    5,107.14x = 16,741,953.50
  5. Step 5: Solve for x
    x = 16,741,953.50/5,107.14
  6. Step 6: Final answer
    x = 3,278.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.