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Finding the Fourth Proportional to 9,158.16, 12,638.89 and 5,179.27

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Solution

The fourth proportional to 9,158.16, 12,638.89 and 5,179.27 is: 7,147.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,158.16 : 12,638.89 = 5,179.27 : x
  2. Step 2: Convert to fraction form
    9,158.16/12,638.89 = 5,179.27/x
  3. Step 3: Cross multiply
    9,158.16x = 12,638.89 × 5,179.27
  4. Step 4: Simplify right side
    9,158.16x = 65,460,197.91
  5. Step 5: Solve for x
    x = 65,460,197.91/9,158.16
  6. Step 6: Final answer
    x = 7,147.75

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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.