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Finding the Fourth Proportional to 6,664.11, 9,992.82 and 2,220.21

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Solution

The fourth proportional to 6,664.11, 9,992.82 and 2,220.21 is: 3,329.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,664.11 : 9,992.82 = 2,220.21 : x
  2. Step 2: Convert to fraction form
    6,664.11/9,992.82 = 2,220.21/x
  3. Step 3: Cross multiply
    6,664.11x = 9,992.82 × 2,220.21
  4. Step 4: Simplify right side
    6,664.11x = 22,186,158.89
  5. Step 5: Solve for x
    x = 22,186,158.89/6,664.11
  6. Step 6: Final answer
    x = 3,329.20

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Similar ratio
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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.