Home / 3,849-5,311.20-2,170.36

Finding the Fourth Proportional to 3,849, 5,311.20 and 2,170.36

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Solution

The fourth proportional to 3,849, 5,311.20 and 2,170.36 is: 2,994.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849 : 5,311.20 = 2,170.36 : x
  2. Step 2: Convert to fraction form
    3,849/5,311.20 = 2,170.36/x
  3. Step 3: Cross multiply
    3,849x = 5,311.20 × 2,170.36
  4. Step 4: Simplify right side
    3,849x = 11,527,216.03
  5. Step 5: Solve for x
    x = 11,527,216.03/3,849
  6. Step 6: Final answer
    x = 2,994.86

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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.