Home / 3,983.78-5,497.38-2,215.34

Finding the Fourth Proportional to 3,983.78, 5,497.38 and 2,215.34

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Solution

The fourth proportional to 3,983.78, 5,497.38 and 2,215.34 is: 3,057.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,983.78 : 5,497.38 = 2,215.34 : x
  2. Step 2: Convert to fraction form
    3,983.78/5,497.38 = 2,215.34/x
  3. Step 3: Cross multiply
    3,983.78x = 5,497.38 × 2,215.34
  4. Step 4: Simplify right side
    3,983.78x = 12,178,565.81
  5. Step 5: Solve for x
    x = 12,178,565.81/3,983.78
  6. Step 6: Final answer
    x = 3,057.04

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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.