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Finding the Fourth Proportional to 8,994.80, 12,375.96 and 8,787.44

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Solution

The fourth proportional to 8,994.80, 12,375.96 and 8,787.44 is: 12,090.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,994.80 : 12,375.96 = 8,787.44 : x
  2. Step 2: Convert to fraction form
    8,994.80/12,375.96 = 8,787.44/x
  3. Step 3: Cross multiply
    8,994.80x = 12,375.96 × 8,787.44
  4. Step 4: Simplify right side
    8,994.80x = 108,753,005.94
  5. Step 5: Solve for x
    x = 108,753,005.94/8,994.80
  6. Step 6: Final answer
    x = 12,090.65

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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.