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Finding the Fourth Proportional to 8,647.04, 12,972.28 and 3,100.81

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Solution

The fourth proportional to 8,647.04, 12,972.28 and 3,100.81 is: 4,651.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.04 : 12,972.28 = 3,100.81 : x
  2. Step 2: Convert to fraction form
    8,647.04/12,972.28 = 3,100.81/x
  3. Step 3: Cross multiply
    8,647.04x = 12,972.28 × 3,100.81
  4. Step 4: Simplify right side
    8,647.04x = 40,224,575.55
  5. Step 5: Solve for x
    x = 40,224,575.55/8,647.04
  6. Step 6: Final answer
    x = 4,651.83

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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.