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Finding the Fourth Proportional to 7,704.72, 11,557.08 and 5,517.72

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Solution

The fourth proportional to 7,704.72, 11,557.08 and 5,517.72 is: 8,276.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,704.72 : 11,557.08 = 5,517.72 : x
  2. Step 2: Convert to fraction form
    7,704.72/11,557.08 = 5,517.72/x
  3. Step 3: Cross multiply
    7,704.72x = 11,557.08 × 5,517.72
  4. Step 4: Simplify right side
    7,704.72x = 63,768,731.46
  5. Step 5: Solve for x
    x = 63,768,731.46/7,704.72
  6. Step 6: Final answer
    x = 8,276.58

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Double scale
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Similar ratio
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1.5x scale

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.