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Finding the Fourth Proportional to 6,662.60, 9,990.24 and 2,712.85

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Solution

The fourth proportional to 6,662.60, 9,990.24 and 2,712.85 is: 4,067.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,662.60 : 9,990.24 = 2,712.85 : x
  2. Step 2: Convert to fraction form
    6,662.60/9,990.24 = 2,712.85/x
  3. Step 3: Cross multiply
    6,662.60x = 9,990.24 × 2,712.85
  4. Step 4: Simplify right side
    6,662.60x = 27,102,043.63
  5. Step 5: Solve for x
    x = 27,102,043.63/6,662.60
  6. Step 6: Final answer
    x = 4,067.79

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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.