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Finding the Fourth Proportional to 6,659.89, 9,990 and 2,277.32

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Solution

The fourth proportional to 6,659.89, 9,990 and 2,277.32 is: 3,416.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,659.89 : 9,990 = 2,277.32 : x
  2. Step 2: Convert to fraction form
    6,659.89/9,990 = 2,277.32/x
  3. Step 3: Cross multiply
    6,659.89x = 9,990 × 2,277.32
  4. Step 4: Simplify right side
    6,659.89x = 22,750,376.85
  5. Step 5: Solve for x
    x = 22,750,376.85/6,659.89
  6. Step 6: Final answer
    x = 3,416.03

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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.