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Finding the Fourth Proportional to 8,172.77, 12,251.77 and 2,977.43

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Solution

The fourth proportional to 8,172.77, 12,251.77 and 2,977.43 is: 4,463.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172.77 : 12,251.77 = 2,977.43 : x
  2. Step 2: Convert to fraction form
    8,172.77/12,251.77 = 2,977.43/x
  3. Step 3: Cross multiply
    8,172.77x = 12,251.77 × 2,977.43
  4. Step 4: Simplify right side
    8,172.77x = 36,478,772.66
  5. Step 5: Solve for x
    x = 36,478,772.66/8,172.77
  6. Step 6: Final answer
    x = 4,463.45

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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.