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Finding the Fourth Proportional to 12,631, 18,946.52 and 3,397

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Solution

The fourth proportional to 12,631, 18,946.52 and 3,397 is: 5,095.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631 : 18,946.52 = 3,397 : x
  2. Step 2: Convert to fraction form
    12,631/18,946.52 = 3,397/x
  3. Step 3: Cross multiply
    12,631x = 18,946.52 × 3,397
  4. Step 4: Simplify right side
    12,631x = 64,361,328.44
  5. Step 5: Solve for x
    x = 64,361,328.44/12,631
  6. Step 6: Final answer
    x = 5,095.51

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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.