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Finding the Fourth Proportional to 8,379.52, 12,563.07 and 4,216.48

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Solution

The fourth proportional to 8,379.52, 12,563.07 and 4,216.48 is: 6,321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.52 : 12,563.07 = 4,216.48 : x
  2. Step 2: Convert to fraction form
    8,379.52/12,563.07 = 4,216.48/x
  3. Step 3: Cross multiply
    8,379.52x = 12,563.07 × 4,216.48
  4. Step 4: Simplify right side
    8,379.52x = 52,971,933.39
  5. Step 5: Solve for x
    x = 52,971,933.39/8,379.52
  6. Step 6: Final answer
    x = 6,321.60

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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.