Home / 3,983.78-5,497.62-2,215.36

Finding the Fourth Proportional to 3,983.78, 5,497.62 and 2,215.36

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Solution

The fourth proportional to 3,983.78, 5,497.62 and 2,215.36 is: 3,057.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,983.78 : 5,497.62 = 2,215.36 : x
  2. Step 2: Convert to fraction form
    3,983.78/5,497.62 = 2,215.36/x
  3. Step 3: Cross multiply
    3,983.78x = 5,497.62 × 2,215.36
  4. Step 4: Simplify right side
    3,983.78x = 12,179,207.44
  5. Step 5: Solve for x
    x = 12,179,207.44/3,983.78
  6. Step 6: Final answer
    x = 3,057.20

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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.