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Finding the Fourth Proportional to 2,655.53, 3,983.75 and 806.83

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Solution

The fourth proportional to 2,655.53, 3,983.75 and 806.83 is: 1,210.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655.53 : 3,983.75 = 806.83 : x
  2. Step 2: Convert to fraction form
    2,655.53/3,983.75 = 806.83/x
  3. Step 3: Cross multiply
    2,655.53x = 3,983.75 × 806.83
  4. Step 4: Simplify right side
    2,655.53x = 3,214,198.04
  5. Step 5: Solve for x
    x = 3,214,198.04/2,655.53
  6. Step 6: Final answer
    x = 1,210.38

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1.5x scale

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.