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Finding the Fourth Proportional to 2,604.42, 3,906.54 and 873

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Solution

The fourth proportional to 2,604.42, 3,906.54 and 873 is: 1,309.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,604.42 : 3,906.54 = 873 : x
  2. Step 2: Convert to fraction form
    2,604.42/3,906.54 = 873/x
  3. Step 3: Cross multiply
    2,604.42x = 3,906.54 × 873
  4. Step 4: Simplify right side
    2,604.42x = 3,410,409.42
  5. Step 5: Solve for x
    x = 3,410,409.42/2,604.42
  6. Step 6: Final answer
    x = 1,309.47

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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.