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Finding the Fourth Proportional to 8,881.92, 13,286.16 and 7,895.28

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Solution

The fourth proportional to 8,881.92, 13,286.16 and 7,895.28 is: 11,810.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,881.92 : 13,286.16 = 7,895.28 : x
  2. Step 2: Convert to fraction form
    8,881.92/13,286.16 = 7,895.28/x
  3. Step 3: Cross multiply
    8,881.92x = 13,286.16 × 7,895.28
  4. Step 4: Simplify right side
    8,881.92x = 104,897,953.32
  5. Step 5: Solve for x
    x = 104,897,953.32/8,881.92
  6. Step 6: Final answer
    x = 11,810.28

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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.