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Finding the Fourth Proportional to 8,617.53, 12,927.52 and 2,772.78

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Solution

The fourth proportional to 8,617.53, 12,927.52 and 2,772.78 is: 4,159.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.53 : 12,927.52 = 2,772.78 : x
  2. Step 2: Convert to fraction form
    8,617.53/12,927.52 = 2,772.78/x
  3. Step 3: Cross multiply
    8,617.53x = 12,927.52 × 2,772.78
  4. Step 4: Simplify right side
    8,617.53x = 35,845,161.97
  5. Step 5: Solve for x
    x = 35,845,161.97/8,617.53
  6. Step 6: Final answer
    x = 4,159.56

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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.