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Finding the Fourth Proportional to 8,153.72, 12,221.88 and 3,472.64

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Solution

The fourth proportional to 8,153.72, 12,221.88 and 3,472.64 is: 5,205.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,153.72 : 12,221.88 = 3,472.64 : x
  2. Step 2: Convert to fraction form
    8,153.72/12,221.88 = 3,472.64/x
  3. Step 3: Cross multiply
    8,153.72x = 12,221.88 × 3,472.64
  4. Step 4: Simplify right side
    8,153.72x = 42,442,189.36
  5. Step 5: Solve for x
    x = 42,442,189.36/8,153.72
  6. Step 6: Final answer
    x = 5,205.25

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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.