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Finding the Fourth Proportional to 8,270.45, 12,377.95 and 6,789.59

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Solution

The fourth proportional to 8,270.45, 12,377.95 and 6,789.59 is: 10,161.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,270.45 : 12,377.95 = 6,789.59 : x
  2. Step 2: Convert to fraction form
    8,270.45/12,377.95 = 6,789.59/x
  3. Step 3: Cross multiply
    8,270.45x = 12,377.95 × 6,789.59
  4. Step 4: Simplify right side
    8,270.45x = 84,041,205.54
  5. Step 5: Solve for x
    x = 84,041,205.54/8,270.45
  6. Step 6: Final answer
    x = 10,161.62

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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.