Home / 7,129.52-10,694.20-3,231.28

Finding the Fourth Proportional to 7,129.52, 10,694.20 and 3,231.28

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Solution

The fourth proportional to 7,129.52, 10,694.20 and 3,231.28 is: 4,846.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.52 : 10,694.20 = 3,231.28 : x
  2. Step 2: Convert to fraction form
    7,129.52/10,694.20 = 3,231.28/x
  3. Step 3: Cross multiply
    7,129.52x = 10,694.20 × 3,231.28
  4. Step 4: Simplify right side
    7,129.52x = 34,555,954.58
  5. Step 5: Solve for x
    x = 34,555,954.58/7,129.52
  6. Step 6: Final answer
    x = 4,846.88

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1.5x scale

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.