Home / 3,851.17-5,313.80-2,171.88

Finding the Fourth Proportional to 3,851.17, 5,313.80 and 2,171.88

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Solution

The fourth proportional to 3,851.17, 5,313.80 and 2,171.88 is: 2,996.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.17 : 5,313.80 = 2,171.88 : x
  2. Step 2: Convert to fraction form
    3,851.17/5,313.80 = 2,171.88/x
  3. Step 3: Cross multiply
    3,851.17x = 5,313.80 × 2,171.88
  4. Step 4: Simplify right side
    3,851.17x = 11,540,941.37
  5. Step 5: Solve for x
    x = 11,540,941.37/3,851.17
  6. Step 6: Final answer
    x = 2,996.74

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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.