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Finding the Fourth Proportional to 12,644, 18,966 and 3,410

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Solution

The fourth proportional to 12,644, 18,966 and 3,410 is: 5,115

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,644 : 18,966 = 3,410 : x
  2. Step 2: Convert to fraction form
    12,644/18,966 = 3,410/x
  3. Step 3: Cross multiply
    12,644x = 18,966 × 3,410
  4. Step 4: Simplify right side
    12,644x = 64,674,060
  5. Step 5: Solve for x
    x = 64,674,060/12,644
  6. Step 6: Final answer
    x = 5,115

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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.