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Finding the Fourth Proportional to 12,379, 17,084.10 and 6,791.08

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Solution

The fourth proportional to 12,379, 17,084.10 and 6,791.08 is: 9,372.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379 : 17,084.10 = 6,791.08 : x
  2. Step 2: Convert to fraction form
    12,379/17,084.10 = 6,791.08/x
  3. Step 3: Cross multiply
    12,379x = 17,084.10 × 6,791.08
  4. Step 4: Simplify right side
    12,379x = 116,019,489.83
  5. Step 5: Solve for x
    x = 116,019,489.83/12,379
  6. Step 6: Final answer
    x = 9,372.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.