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Finding the Fourth Proportional to 8,808.40, 13,212.60 and 8,662.60

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Solution

The fourth proportional to 8,808.40, 13,212.60 and 8,662.60 is: 12,993.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,808.40 : 13,212.60 = 8,662.60 : x
  2. Step 2: Convert to fraction form
    8,808.40/13,212.60 = 8,662.60/x
  3. Step 3: Cross multiply
    8,808.40x = 13,212.60 × 8,662.60
  4. Step 4: Simplify right side
    8,808.40x = 114,455,468.76
  5. Step 5: Solve for x
    x = 114,455,468.76/8,808.40
  6. Step 6: Final answer
    x = 12,993.90

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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.