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Finding the Fourth Proportional to 9,181, 12,664 and 7,322.44

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Solution

The fourth proportional to 9,181, 12,664 and 7,322.44 is: 10,100.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,181 : 12,664 = 7,322.44 : x
  2. Step 2: Convert to fraction form
    9,181/12,664 = 7,322.44/x
  3. Step 3: Cross multiply
    9,181x = 12,664 × 7,322.44
  4. Step 4: Simplify right side
    9,181x = 92,731,380.16
  5. Step 5: Solve for x
    x = 92,731,380.16/9,181
  6. Step 6: Final answer
    x = 10,100.36

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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.