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Finding the Fourth Proportional to 1,679.63, 2,517.31 and 949.62

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Solution

The fourth proportional to 1,679.63, 2,517.31 and 949.62 is: 1,423.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.63 : 2,517.31 = 949.62 : x
  2. Step 2: Convert to fraction form
    1,679.63/2,517.31 = 949.62/x
  3. Step 3: Cross multiply
    1,679.63x = 2,517.31 × 949.62
  4. Step 4: Simplify right side
    1,679.63x = 2,390,487.92
  5. Step 5: Solve for x
    x = 2,390,487.92/1,679.63
  6. Step 6: Final answer
    x = 1,423.22

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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.