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Finding the Fourth Proportional to 7,220.44, 9,964.24 and 3,908.44

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Solution

The fourth proportional to 7,220.44, 9,964.24 and 3,908.44 is: 5,393.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.44 : 9,964.24 = 3,908.44 : x
  2. Step 2: Convert to fraction form
    7,220.44/9,964.24 = 3,908.44/x
  3. Step 3: Cross multiply
    7,220.44x = 9,964.24 × 3,908.44
  4. Step 4: Simplify right side
    7,220.44x = 38,944,599.50
  5. Step 5: Solve for x
    x = 38,944,599.50/7,220.44
  6. Step 6: Final answer
    x = 5,393.66

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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.