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Finding the Fourth Proportional to 2,965.57, 4,447.72 and 1,908.21

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Solution

The fourth proportional to 2,965.57, 4,447.72 and 1,908.21 is: 2,861.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,965.57 : 4,447.72 = 1,908.21 : x
  2. Step 2: Convert to fraction form
    2,965.57/4,447.72 = 1,908.21/x
  3. Step 3: Cross multiply
    2,965.57x = 4,447.72 × 1,908.21
  4. Step 4: Simplify right side
    2,965.57x = 8,487,183.78
  5. Step 5: Solve for x
    x = 8,487,183.78/2,965.57
  6. Step 6: Final answer
    x = 2,861.91

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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.