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Finding the Fourth Proportional to 6,660.81, 9,191.90 and 3,676.62

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Solution

The fourth proportional to 6,660.81, 9,191.90 and 3,676.62 is: 5,073.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,660.81 : 9,191.90 = 3,676.62 : x
  2. Step 2: Convert to fraction form
    6,660.81/9,191.90 = 3,676.62/x
  3. Step 3: Cross multiply
    6,660.81x = 9,191.90 × 3,676.62
  4. Step 4: Simplify right side
    6,660.81x = 33,795,104.99
  5. Step 5: Solve for x
    x = 33,795,104.99/6,660.81
  6. Step 6: Final answer
    x = 5,073.72

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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.