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Finding the Fourth Proportional to 2,908.87, 4,361.57 and 1,972.97

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Solution

The fourth proportional to 2,908.87, 4,361.57 and 1,972.97 is: 2,958.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.87 : 4,361.57 = 1,972.97 : x
  2. Step 2: Convert to fraction form
    2,908.87/4,361.57 = 1,972.97/x
  3. Step 3: Cross multiply
    2,908.87x = 4,361.57 × 1,972.97
  4. Step 4: Simplify right side
    2,908.87x = 8,605,215.09
  5. Step 5: Solve for x
    x = 8,605,215.09/2,908.87
  6. Step 6: Final answer
    x = 2,958.27

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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.