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Finding the Fourth Proportional to 2,604.60, 3,906.94 and 873.24

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Solution

The fourth proportional to 2,604.60, 3,906.94 and 873.24 is: 1,309.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,604.60 : 3,906.94 = 873.24 : x
  2. Step 2: Convert to fraction form
    2,604.60/3,906.94 = 873.24/x
  3. Step 3: Cross multiply
    2,604.60x = 3,906.94 × 873.24
  4. Step 4: Simplify right side
    2,604.60x = 3,411,696.29
  5. Step 5: Solve for x
    x = 3,411,696.29/2,604.60
  6. Step 6: Final answer
    x = 1,309.87

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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.