Home / 7,909.28-11,863.92-3,231.49

Finding the Fourth Proportional to 7,909.28, 11,863.92 and 3,231.49

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Solution

The fourth proportional to 7,909.28, 11,863.92 and 3,231.49 is: 4,847.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.28 : 11,863.92 = 3,231.49 : x
  2. Step 2: Convert to fraction form
    7,909.28/11,863.92 = 3,231.49/x
  3. Step 3: Cross multiply
    7,909.28x = 11,863.92 × 3,231.49
  4. Step 4: Simplify right side
    7,909.28x = 38,338,138.84
  5. Step 5: Solve for x
    x = 38,338,138.84/7,909.28
  6. Step 6: Final answer
    x = 4,847.24

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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.