Home / 8,243.08-12,369.66-3,311.80

Finding the Fourth Proportional to 8,243.08, 12,369.66 and 3,311.80

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Solution

The fourth proportional to 8,243.08, 12,369.66 and 3,311.80 is: 4,969.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,243.08 : 12,369.66 = 3,311.80 : x
  2. Step 2: Convert to fraction form
    8,243.08/12,369.66 = 3,311.80/x
  3. Step 3: Cross multiply
    8,243.08x = 12,369.66 × 3,311.80
  4. Step 4: Simplify right side
    8,243.08x = 40,965,839.99
  5. Step 5: Solve for x
    x = 40,965,839.99/8,243.08
  6. Step 6: Final answer
    x = 4,969.72

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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.