Home / 3,173.10-4,377.42-2,920.38

Finding the Fourth Proportional to 3,173.10, 4,377.42 and 2,920.38

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Solution

The fourth proportional to 3,173.10, 4,377.42 and 2,920.38 is: 4,028.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,173.10 : 4,377.42 = 2,920.38 : x
  2. Step 2: Convert to fraction form
    3,173.10/4,377.42 = 2,920.38/x
  3. Step 3: Cross multiply
    3,173.10x = 4,377.42 × 2,920.38
  4. Step 4: Simplify right side
    3,173.10x = 12,783,729.82
  5. Step 5: Solve for x
    x = 12,783,729.82/3,173.10
  6. Step 6: Final answer
    x = 4,028.78

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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.