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Finding the Fourth Proportional to 8,805.76, 12,153.38 and 5,269.64

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Solution

The fourth proportional to 8,805.76, 12,153.38 and 5,269.64 is: 7,272.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,805.76 : 12,153.38 = 5,269.64 : x
  2. Step 2: Convert to fraction form
    8,805.76/12,153.38 = 5,269.64/x
  3. Step 3: Cross multiply
    8,805.76x = 12,153.38 × 5,269.64
  4. Step 4: Simplify right side
    8,805.76x = 64,043,850.27
  5. Step 5: Solve for x
    x = 64,043,850.27/8,805.76
  6. Step 6: Final answer
    x = 7,272.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.