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Finding the Fourth Proportional to 8,504.64, 11,728.48 and 5,517.28

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Solution

The fourth proportional to 8,504.64, 11,728.48 and 5,517.28 is: 7,608.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,504.64 : 11,728.48 = 5,517.28 : x
  2. Step 2: Convert to fraction form
    8,504.64/11,728.48 = 5,517.28/x
  3. Step 3: Cross multiply
    8,504.64x = 11,728.48 × 5,517.28
  4. Step 4: Simplify right side
    8,504.64x = 64,709,308.13
  5. Step 5: Solve for x
    x = 64,709,308.13/8,504.64
  6. Step 6: Final answer
    x = 7,608.71

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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.