Home / 3,983.70-5,497.20-2,215.20

Finding the Fourth Proportional to 3,983.70, 5,497.20 and 2,215.20

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Solution

The fourth proportional to 3,983.70, 5,497.20 and 2,215.20 is: 3,056.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,983.70 : 5,497.20 = 2,215.20 : x
  2. Step 2: Convert to fraction form
    3,983.70/5,497.20 = 2,215.20/x
  3. Step 3: Cross multiply
    3,983.70x = 5,497.20 × 2,215.20
  4. Step 4: Simplify right side
    3,983.70x = 12,177,397.44
  5. Step 5: Solve for x
    x = 12,177,397.44/3,983.70
  6. Step 6: Final answer
    x = 3,056.81

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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.