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Finding the Fourth Proportional to 3,983.79, 5,497.81 and 2,305.28

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Solution

The fourth proportional to 3,983.79, 5,497.81 and 2,305.28 is: 3,181.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,983.79 : 5,497.81 = 2,305.28 : x
  2. Step 2: Convert to fraction form
    3,983.79/5,497.81 = 2,305.28/x
  3. Step 3: Cross multiply
    3,983.79x = 5,497.81 × 2,305.28
  4. Step 4: Simplify right side
    3,983.79x = 12,673,958.18
  5. Step 5: Solve for x
    x = 12,673,958.18/3,983.79
  6. Step 6: Final answer
    x = 3,181.38

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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.