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Finding the Fourth Proportional to 6,660.40, 9,990.60 and 2,277.89

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Solution

The fourth proportional to 6,660.40, 9,990.60 and 2,277.89 is: 3,416.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,660.40 : 9,990.60 = 2,277.89 : x
  2. Step 2: Convert to fraction form
    6,660.40/9,990.60 = 2,277.89/x
  3. Step 3: Cross multiply
    6,660.40x = 9,990.60 × 2,277.89
  4. Step 4: Simplify right side
    6,660.40x = 22,757,487.83
  5. Step 5: Solve for x
    x = 22,757,487.83/6,660.40
  6. Step 6: Final answer
    x = 3,416.84

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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.