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Finding the Fourth Proportional to 7,209.91, 9,949.67 and 4,066.09

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Solution

The fourth proportional to 7,209.91, 9,949.67 and 4,066.09 is: 5,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209.91 : 9,949.67 = 4,066.09 : x
  2. Step 2: Convert to fraction form
    7,209.91/9,949.67 = 4,066.09/x
  3. Step 3: Cross multiply
    7,209.91x = 9,949.67 × 4,066.09
  4. Step 4: Simplify right side
    7,209.91x = 40,456,253.69
  5. Step 5: Solve for x
    x = 40,456,253.69/7,209.91
  6. Step 6: Final answer
    x = 5,611.20

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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.