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Finding the Fourth Proportional to 8,443.46, 12,662.45 and 3,511.78

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Solution

The fourth proportional to 8,443.46, 12,662.45 and 3,511.78 is: 5,266.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,443.46 : 12,662.45 = 3,511.78 : x
  2. Step 2: Convert to fraction form
    8,443.46/12,662.45 = 3,511.78/x
  3. Step 3: Cross multiply
    8,443.46x = 12,662.45 × 3,511.78
  4. Step 4: Simplify right side
    8,443.46x = 44,467,702.62
  5. Step 5: Solve for x
    x = 44,467,702.62/8,443.46
  6. Step 6: Final answer
    x = 5,266.52

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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.