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Finding the Fourth Proportional to 3,753.92, 5,619.92 and 3,015.80

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Solution

The fourth proportional to 3,753.92, 5,619.92 and 3,015.80 is: 4,514.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,753.92 : 5,619.92 = 3,015.80 : x
  2. Step 2: Convert to fraction form
    3,753.92/5,619.92 = 3,015.80/x
  3. Step 3: Cross multiply
    3,753.92x = 5,619.92 × 3,015.80
  4. Step 4: Simplify right side
    3,753.92x = 16,948,511.56
  5. Step 5: Solve for x
    x = 16,948,511.56/3,753.92
  6. Step 6: Final answer
    x = 4,514.89

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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.