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Finding the Fourth Proportional to 8,664.72, 12,999 and 4,767.12

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Solution

The fourth proportional to 8,664.72, 12,999 and 4,767.12 is: 7,151.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.72 : 12,999 = 4,767.12 : x
  2. Step 2: Convert to fraction form
    8,664.72/12,999 = 4,767.12/x
  3. Step 3: Cross multiply
    8,664.72x = 12,999 × 4,767.12
  4. Step 4: Simplify right side
    8,664.72x = 61,967,792.88
  5. Step 5: Solve for x
    x = 61,967,792.88/8,664.72
  6. Step 6: Final answer
    x = 7,151.74

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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.