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Finding the Fourth Proportional to 8,245.60, 12,365.52 and 3,865.12

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Solution

The fourth proportional to 8,245.60, 12,365.52 and 3,865.12 is: 5,796.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,245.60 : 12,365.52 = 3,865.12 : x
  2. Step 2: Convert to fraction form
    8,245.60/12,365.52 = 3,865.12/x
  3. Step 3: Cross multiply
    8,245.60x = 12,365.52 × 3,865.12
  4. Step 4: Simplify right side
    8,245.60x = 47,794,218.66
  5. Step 5: Solve for x
    x = 47,794,218.66/8,245.60
  6. Step 6: Final answer
    x = 5,796.33

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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.