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Finding the Fourth Proportional to 5,008.78, 6,912.94 and 2,914.12

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Solution

The fourth proportional to 5,008.78, 6,912.94 and 2,914.12 is: 4,021.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,008.78 : 6,912.94 = 2,914.12 : x
  2. Step 2: Convert to fraction form
    5,008.78/6,912.94 = 2,914.12/x
  3. Step 3: Cross multiply
    5,008.78x = 6,912.94 × 2,914.12
  4. Step 4: Simplify right side
    5,008.78x = 20,145,136.71
  5. Step 5: Solve for x
    x = 20,145,136.71/5,008.78
  6. Step 6: Final answer
    x = 4,021.96

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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.