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Finding the Fourth Proportional to 12,776, 19,164 and 3,542

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Solution

The fourth proportional to 12,776, 19,164 and 3,542 is: 5,313

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,776 : 19,164 = 3,542 : x
  2. Step 2: Convert to fraction form
    12,776/19,164 = 3,542/x
  3. Step 3: Cross multiply
    12,776x = 19,164 × 3,542
  4. Step 4: Simplify right side
    12,776x = 67,878,888
  5. Step 5: Solve for x
    x = 67,878,888/12,776
  6. Step 6: Final answer
    x = 5,313

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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.