Home / 3,811.62-5,261.31-2,239.14

Finding the Fourth Proportional to 3,811.62, 5,261.31 and 2,239.14

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Solution

The fourth proportional to 3,811.62, 5,261.31 and 2,239.14 is: 3,090.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.62 : 5,261.31 = 2,239.14 : x
  2. Step 2: Convert to fraction form
    3,811.62/5,261.31 = 2,239.14/x
  3. Step 3: Cross multiply
    3,811.62x = 5,261.31 × 2,239.14
  4. Step 4: Simplify right side
    3,811.62x = 11,780,809.67
  5. Step 5: Solve for x
    x = 11,780,809.67/3,811.62
  6. Step 6: Final answer
    x = 3,090.76

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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.