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Finding the Fourth Proportional to 8,519.67, 12,787.43 and 4,362.66

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Solution

The fourth proportional to 8,519.67, 12,787.43 and 4,362.66 is: 6,548.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,519.67 : 12,787.43 = 4,362.66 : x
  2. Step 2: Convert to fraction form
    8,519.67/12,787.43 = 4,362.66/x
  3. Step 3: Cross multiply
    8,519.67x = 12,787.43 × 4,362.66
  4. Step 4: Simplify right side
    8,519.67x = 55,787,187.55
  5. Step 5: Solve for x
    x = 55,787,187.55/8,519.67
  6. Step 6: Final answer
    x = 6,548.05

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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.