Home / 3,171.05-4,377.27-2,838.90

Finding the Fourth Proportional to 3,171.05, 4,377.27 and 2,838.90

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Solution

The fourth proportional to 3,171.05, 4,377.27 and 2,838.90 is: 3,918.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.05 : 4,377.27 = 2,838.90 : x
  2. Step 2: Convert to fraction form
    3,171.05/4,377.27 = 2,838.90/x
  3. Step 3: Cross multiply
    3,171.05x = 4,377.27 × 2,838.90
  4. Step 4: Simplify right side
    3,171.05x = 12,426,634.24
  5. Step 5: Solve for x
    x = 12,426,634.24/3,171.05
  6. Step 6: Final answer
    x = 3,918.78

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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.