Home / 5,396.10-8,091.28-2,105.88

Finding the Fourth Proportional to 5,396.10, 8,091.28 and 2,105.88

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Solution

The fourth proportional to 5,396.10, 8,091.28 and 2,105.88 is: 3,157.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,396.10 : 8,091.28 = 2,105.88 : x
  2. Step 2: Convert to fraction form
    5,396.10/8,091.28 = 2,105.88/x
  3. Step 3: Cross multiply
    5,396.10x = 8,091.28 × 2,105.88
  4. Step 4: Simplify right side
    5,396.10x = 17,039,264.73
  5. Step 5: Solve for x
    x = 17,039,264.73/5,396.10
  6. Step 6: Final answer
    x = 3,157.70

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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.