Home / 3,849.49-5,311.98-2,171.31

Finding the Fourth Proportional to 3,849.49, 5,311.98 and 2,171.31

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Solution

The fourth proportional to 3,849.49, 5,311.98 and 2,171.31 is: 2,996.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849.49 : 5,311.98 = 2,171.31 : x
  2. Step 2: Convert to fraction form
    3,849.49/5,311.98 = 2,171.31/x
  3. Step 3: Cross multiply
    3,849.49x = 5,311.98 × 2,171.31
  4. Step 4: Simplify right side
    3,849.49x = 11,533,935.37
  5. Step 5: Solve for x
    x = 11,533,935.37/3,849.49
  6. Step 6: Final answer
    x = 2,996.22

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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.