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Finding the Fourth Proportional to 28,864, 43,296 and 6,976

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Solution

The fourth proportional to 28,864, 43,296 and 6,976 is: 10,464

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,864 : 43,296 = 6,976 : x
  2. Step 2: Convert to fraction form
    28,864/43,296 = 6,976/x
  3. Step 3: Cross multiply
    28,864x = 43,296 × 6,976
  4. Step 4: Simplify right side
    28,864x = 302,032,896
  5. Step 5: Solve for x
    x = 302,032,896/28,864
  6. Step 6: Final answer
    x = 10,464

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.