Home / 8,215.43-12,329.09-3,286.44

Finding the Fourth Proportional to 8,215.43, 12,329.09 and 3,286.44

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Solution

The fourth proportional to 8,215.43, 12,329.09 and 3,286.44 is: 4,932.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.43 : 12,329.09 = 3,286.44 : x
  2. Step 2: Convert to fraction form
    8,215.43/12,329.09 = 3,286.44/x
  3. Step 3: Cross multiply
    8,215.43x = 12,329.09 × 3,286.44
  4. Step 4: Simplify right side
    8,215.43x = 40,518,844.34
  5. Step 5: Solve for x
    x = 40,518,844.34/8,215.43
  6. Step 6: Final answer
    x = 4,932.04

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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.