Home / 6,660.90-9,989.18-2,217.62

Finding the Fourth Proportional to 6,660.90, 9,989.18 and 2,217.62

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Solution

The fourth proportional to 6,660.90, 9,989.18 and 2,217.62 is: 3,325.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,660.90 : 9,989.18 = 2,217.62 : x
  2. Step 2: Convert to fraction form
    6,660.90/9,989.18 = 2,217.62/x
  3. Step 3: Cross multiply
    6,660.90x = 9,989.18 × 2,217.62
  4. Step 4: Simplify right side
    6,660.90x = 22,152,235.87
  5. Step 5: Solve for x
    x = 22,152,235.87/6,660.90
  6. Step 6: Final answer
    x = 3,325.71

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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.