Home / 8,679.28-13,022.96-3,134.88

Finding the Fourth Proportional to 8,679.28, 13,022.96 and 3,134.88

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Solution

The fourth proportional to 8,679.28, 13,022.96 and 3,134.88 is: 4,703.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.28 : 13,022.96 = 3,134.88 : x
  2. Step 2: Convert to fraction form
    8,679.28/13,022.96 = 3,134.88/x
  3. Step 3: Cross multiply
    8,679.28x = 13,022.96 × 3,134.88
  4. Step 4: Simplify right side
    8,679.28x = 40,825,416.84
  5. Step 5: Solve for x
    x = 40,825,416.84/8,679.28
  6. Step 6: Final answer
    x = 4,703.78

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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.