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Finding the Fourth Proportional to 8,662.60, 12,971.22 and 6,716.44

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Solution

The fourth proportional to 8,662.60, 12,971.22 and 6,716.44 is: 10,057.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662.60 : 12,971.22 = 6,716.44 : x
  2. Step 2: Convert to fraction form
    8,662.60/12,971.22 = 6,716.44/x
  3. Step 3: Cross multiply
    8,662.60x = 12,971.22 × 6,716.44
  4. Step 4: Simplify right side
    8,662.60x = 87,120,420.86
  5. Step 5: Solve for x
    x = 87,120,420.86/8,662.60
  6. Step 6: Final answer
    x = 10,057.08

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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.