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Finding the Fourth Proportional to 7,991.97, 11,027.25 and 4,847.55

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Solution

The fourth proportional to 7,991.97, 11,027.25 and 4,847.55 is: 6,688.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.97 : 11,027.25 = 4,847.55 : x
  2. Step 2: Convert to fraction form
    7,991.97/11,027.25 = 4,847.55/x
  3. Step 3: Cross multiply
    7,991.97x = 11,027.25 × 4,847.55
  4. Step 4: Simplify right side
    7,991.97x = 53,455,145.74
  5. Step 5: Solve for x
    x = 53,455,145.74/7,991.97
  6. Step 6: Final answer
    x = 6,688.61

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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.