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Finding the Fourth Proportional to 2,655.37, 3,983.70 and 806.38

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Solution

The fourth proportional to 2,655.37, 3,983.70 and 806.38 is: 1,209.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655.37 : 3,983.70 = 806.38 : x
  2. Step 2: Convert to fraction form
    2,655.37/3,983.70 = 806.38/x
  3. Step 3: Cross multiply
    2,655.37x = 3,983.70 × 806.38
  4. Step 4: Simplify right side
    2,655.37x = 3,212,352.06
  5. Step 5: Solve for x
    x = 3,212,352.06/2,655.37
  6. Step 6: Final answer
    x = 1,209.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.