Home / 3,899.34-5,380.83-2,220.92

Finding the Fourth Proportional to 3,899.34, 5,380.83 and 2,220.92

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Solution

The fourth proportional to 3,899.34, 5,380.83 and 2,220.92 is: 3,064.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.34 : 5,380.83 = 2,220.92 : x
  2. Step 2: Convert to fraction form
    3,899.34/5,380.83 = 2,220.92/x
  3. Step 3: Cross multiply
    3,899.34x = 5,380.83 × 2,220.92
  4. Step 4: Simplify right side
    3,899.34x = 11,950,392.96
  5. Step 5: Solve for x
    x = 11,950,392.96/3,899.34
  6. Step 6: Final answer
    x = 3,064.72

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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.