Home / 7,129.52-10,694.46-3,380.42

Finding the Fourth Proportional to 7,129.52, 10,694.46 and 3,380.42

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Solution

The fourth proportional to 7,129.52, 10,694.46 and 3,380.42 is: 5,070.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.52 : 10,694.46 = 3,380.42 : x
  2. Step 2: Convert to fraction form
    7,129.52/10,694.46 = 3,380.42/x
  3. Step 3: Cross multiply
    7,129.52x = 10,694.46 × 3,380.42
  4. Step 4: Simplify right side
    7,129.52x = 36,151,713.00
  5. Step 5: Solve for x
    x = 36,151,713.00/7,129.52
  6. Step 6: Final answer
    x = 5,070.71

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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.