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Finding the Fourth Proportional to 7,994.84, 11,997.72 and 2,800.64

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Solution

The fourth proportional to 7,994.84, 11,997.72 and 2,800.64 is: 4,202.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,994.84 : 11,997.72 = 2,800.64 : x
  2. Step 2: Convert to fraction form
    7,994.84/11,997.72 = 2,800.64/x
  3. Step 3: Cross multiply
    7,994.84x = 11,997.72 × 2,800.64
  4. Step 4: Simplify right side
    7,994.84x = 33,601,294.54
  5. Step 5: Solve for x
    x = 33,601,294.54/7,994.84
  6. Step 6: Final answer
    x = 4,202.87

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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.