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Finding the Fourth Proportional to 9,171.12, 12,659.14 and 5,394.09

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Solution

The fourth proportional to 9,171.12, 12,659.14 and 5,394.09 is: 7,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,171.12 : 12,659.14 = 5,394.09 : x
  2. Step 2: Convert to fraction form
    9,171.12/12,659.14 = 5,394.09/x
  3. Step 3: Cross multiply
    9,171.12x = 12,659.14 × 5,394.09
  4. Step 4: Simplify right side
    9,171.12x = 68,284,564.36
  5. Step 5: Solve for x
    x = 68,284,564.36/9,171.12
  6. Step 6: Final answer
    x = 7,445.60

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