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Finding the Fourth Proportional to 12,560, 18,840 and 3,326

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Solution

The fourth proportional to 12,560, 18,840 and 3,326 is: 4,989

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,560 : 18,840 = 3,326 : x
  2. Step 2: Convert to fraction form
    12,560/18,840 = 3,326/x
  3. Step 3: Cross multiply
    12,560x = 18,840 × 3,326
  4. Step 4: Simplify right side
    12,560x = 62,661,840
  5. Step 5: Solve for x
    x = 62,661,840/12,560
  6. Step 6: Final answer
    x = 4,989

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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.