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Finding the Fourth Proportional to 7,991.94, 11,993.58 and 6,450.60

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Solution

The fourth proportional to 7,991.94, 11,993.58 and 6,450.60 is: 9,680.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.94 : 11,993.58 = 6,450.60 : x
  2. Step 2: Convert to fraction form
    7,991.94/11,993.58 = 6,450.60/x
  3. Step 3: Cross multiply
    7,991.94x = 11,993.58 × 6,450.60
  4. Step 4: Simplify right side
    7,991.94x = 77,365,787.15
  5. Step 5: Solve for x
    x = 77,365,787.15/7,991.94
  6. Step 6: Final answer
    x = 9,680.48

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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.