Home / 3,899.03-5,380.79-2,406.92

Finding the Fourth Proportional to 3,899.03, 5,380.79 and 2,406.92

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Solution

The fourth proportional to 3,899.03, 5,380.79 and 2,406.92 is: 3,321.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.03 : 5,380.79 = 2,406.92 : x
  2. Step 2: Convert to fraction form
    3,899.03/5,380.79 = 2,406.92/x
  3. Step 3: Cross multiply
    3,899.03x = 5,380.79 × 2,406.92
  4. Step 4: Simplify right side
    3,899.03x = 12,951,092.13
  5. Step 5: Solve for x
    x = 12,951,092.13/3,899.03
  6. Step 6: Final answer
    x = 3,321.62

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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.