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Finding the Fourth Proportional to 8,728.72, 13,087 and 4,046.11

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Solution

The fourth proportional to 8,728.72, 13,087 and 4,046.11 is: 6,066.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.72 : 13,087 = 4,046.11 : x
  2. Step 2: Convert to fraction form
    8,728.72/13,087 = 4,046.11/x
  3. Step 3: Cross multiply
    8,728.72x = 13,087 × 4,046.11
  4. Step 4: Simplify right side
    8,728.72x = 52,951,441.57
  5. Step 5: Solve for x
    x = 52,951,441.57/8,728.72
  6. Step 6: Final answer
    x = 6,066.35

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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.