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Finding the Fourth Proportional to 1,908.42, 2,861.73 and 738.97

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Solution

The fourth proportional to 1,908.42, 2,861.73 and 738.97 is: 1,108.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.42 : 2,861.73 = 738.97 : x
  2. Step 2: Convert to fraction form
    1,908.42/2,861.73 = 738.97/x
  3. Step 3: Cross multiply
    1,908.42x = 2,861.73 × 738.97
  4. Step 4: Simplify right side
    1,908.42x = 2,114,728.92
  5. Step 5: Solve for x
    x = 2,114,728.92/1,908.42
  6. Step 6: Final answer
    x = 1,108.11

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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.