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Finding the Fourth Proportional to 7,209.73, 9,949.43 and 4,065.92

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Solution

The fourth proportional to 7,209.73, 9,949.43 and 4,065.92 is: 5,610.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209.73 : 9,949.43 = 4,065.92 : x
  2. Step 2: Convert to fraction form
    7,209.73/9,949.43 = 4,065.92/x
  3. Step 3: Cross multiply
    7,209.73x = 9,949.43 × 4,065.92
  4. Step 4: Simplify right side
    7,209.73x = 40,453,586.43
  5. Step 5: Solve for x
    x = 40,453,586.43/7,209.73
  6. Step 6: Final answer
    x = 5,610.97

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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.