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Finding the Fourth Proportional to 7,998.57, 11,997.86 and 6,627.69

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Solution

The fourth proportional to 7,998.57, 11,997.86 and 6,627.69 is: 9,941.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.57 : 11,997.86 = 6,627.69 : x
  2. Step 2: Convert to fraction form
    7,998.57/11,997.86 = 6,627.69/x
  3. Step 3: Cross multiply
    7,998.57x = 11,997.86 × 6,627.69
  4. Step 4: Simplify right side
    7,998.57x = 79,518,063.60
  5. Step 5: Solve for x
    x = 79,518,063.60/7,998.57
  6. Step 6: Final answer
    x = 9,941.54

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Half scale
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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.