Home / 3,892.47-5,371.58-2,213.88

Finding the Fourth Proportional to 3,892.47, 5,371.58 and 2,213.88

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Solution

The fourth proportional to 3,892.47, 5,371.58 and 2,213.88 is: 3,055.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.47 : 5,371.58 = 2,213.88 : x
  2. Step 2: Convert to fraction form
    3,892.47/5,371.58 = 2,213.88/x
  3. Step 3: Cross multiply
    3,892.47x = 5,371.58 × 2,213.88
  4. Step 4: Simplify right side
    3,892.47x = 11,892,025.64
  5. Step 5: Solve for x
    x = 11,892,025.64/3,892.47
  6. Step 6: Final answer
    x = 3,055.13

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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.