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Finding the Fourth Proportional to 8,251.80, 12,384.90 and 6,604.20

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Solution

The fourth proportional to 8,251.80, 12,384.90 and 6,604.20 is: 9,912.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,251.80 : 12,384.90 = 6,604.20 : x
  2. Step 2: Convert to fraction form
    8,251.80/12,384.90 = 6,604.20/x
  3. Step 3: Cross multiply
    8,251.80x = 12,384.90 × 6,604.20
  4. Step 4: Simplify right side
    8,251.80x = 81,792,356.58
  5. Step 5: Solve for x
    x = 81,792,356.58/8,251.80
  6. Step 6: Final answer
    x = 9,912.06

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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.