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Finding the Fourth Proportional to 8,772.73, 12,105.31 and 4,995.90

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Solution

The fourth proportional to 8,772.73, 12,105.31 and 4,995.90 is: 6,893.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.73 : 12,105.31 = 4,995.90 : x
  2. Step 2: Convert to fraction form
    8,772.73/12,105.31 = 4,995.90/x
  3. Step 3: Cross multiply
    8,772.73x = 12,105.31 × 4,995.90
  4. Step 4: Simplify right side
    8,772.73x = 60,476,918.23
  5. Step 5: Solve for x
    x = 60,476,918.23/8,772.73
  6. Step 6: Final answer
    x = 6,893.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.