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Finding the Fourth Proportional to 3,229.72, 4,456.72 and 1,813.64

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Solution

The fourth proportional to 3,229.72, 4,456.72 and 1,813.64 is: 2,502.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,229.72 : 4,456.72 = 1,813.64 : x
  2. Step 2: Convert to fraction form
    3,229.72/4,456.72 = 1,813.64/x
  3. Step 3: Cross multiply
    3,229.72x = 4,456.72 × 1,813.64
  4. Step 4: Simplify right side
    3,229.72x = 8,082,890.71
  5. Step 5: Solve for x
    x = 8,082,890.71/3,229.72
  6. Step 6: Final answer
    x = 2,502.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.