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Finding the Fourth Proportional to 8,647.22, 12,972.36 and 5,364.02

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Solution

The fourth proportional to 8,647.22, 12,972.36 and 5,364.02 is: 8,046.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.22 : 12,972.36 = 5,364.02 : x
  2. Step 2: Convert to fraction form
    8,647.22/12,972.36 = 5,364.02/x
  3. Step 3: Cross multiply
    8,647.22x = 12,972.36 × 5,364.02
  4. Step 4: Simplify right side
    8,647.22x = 69,583,998.49
  5. Step 5: Solve for x
    x = 69,583,998.49/8,647.22
  6. Step 6: Final answer
    x = 8,046.98

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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.