Home / 3,101.78-4,654.99-2,171.22

Finding the Fourth Proportional to 3,101.78, 4,654.99 and 2,171.22

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Solution

The fourth proportional to 3,101.78, 4,654.99 and 2,171.22 is: 3,258.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.78 : 4,654.99 = 2,171.22 : x
  2. Step 2: Convert to fraction form
    3,101.78/4,654.99 = 2,171.22/x
  3. Step 3: Cross multiply
    3,101.78x = 4,654.99 × 2,171.22
  4. Step 4: Simplify right side
    3,101.78x = 10,107,007.39
  5. Step 5: Solve for x
    x = 10,107,007.39/3,101.78
  6. Step 6: Final answer
    x = 3,258.45

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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.