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Finding the Fourth Proportional to 5,112.78, 7,669.11 and 1,414.98

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Solution

The fourth proportional to 5,112.78, 7,669.11 and 1,414.98 is: 2,122.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.78 : 7,669.11 = 1,414.98 : x
  2. Step 2: Convert to fraction form
    5,112.78/7,669.11 = 1,414.98/x
  3. Step 3: Cross multiply
    5,112.78x = 7,669.11 × 1,414.98
  4. Step 4: Simplify right side
    5,112.78x = 10,851,637.27
  5. Step 5: Solve for x
    x = 10,851,637.27/5,112.78
  6. Step 6: Final answer
    x = 2,122.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.