Home / 8,209.08-12,321.84-3,829.62

Finding the Fourth Proportional to 8,209.08, 12,321.84 and 3,829.62

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Solution

The fourth proportional to 8,209.08, 12,321.84 and 3,829.62 is: 5,748.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,209.08 : 12,321.84 = 3,829.62 : x
  2. Step 2: Convert to fraction form
    8,209.08/12,321.84 = 3,829.62/x
  3. Step 3: Cross multiply
    8,209.08x = 12,321.84 × 3,829.62
  4. Step 4: Simplify right side
    8,209.08x = 47,187,964.90
  5. Step 5: Solve for x
    x = 47,187,964.90/8,209.08
  6. Step 6: Final answer
    x = 5,748.26

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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.