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Finding the Fourth Proportional to 3,699.73, 5,551.89 and 1,920.97

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Solution

The fourth proportional to 3,699.73, 5,551.89 and 1,920.97 is: 2,882.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,699.73 : 5,551.89 = 1,920.97 : x
  2. Step 2: Convert to fraction form
    3,699.73/5,551.89 = 1,920.97/x
  3. Step 3: Cross multiply
    3,699.73x = 5,551.89 × 1,920.97
  4. Step 4: Simplify right side
    3,699.73x = 10,664,993.45
  5. Step 5: Solve for x
    x = 10,664,993.45/3,699.73
  6. Step 6: Final answer
    x = 2,882.64

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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.