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Finding the Fourth Proportional to 8,423.88, 12,623.94 and 3,976.80

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Solution

The fourth proportional to 8,423.88, 12,623.94 and 3,976.80 is: 5,959.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,423.88 : 12,623.94 = 3,976.80 : x
  2. Step 2: Convert to fraction form
    8,423.88/12,623.94 = 3,976.80/x
  3. Step 3: Cross multiply
    8,423.88x = 12,623.94 × 3,976.80
  4. Step 4: Simplify right side
    8,423.88x = 50,202,884.59
  5. Step 5: Solve for x
    x = 50,202,884.59/8,423.88
  6. Step 6: Final answer
    x = 5,959.59

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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.