Home / 3,131.94-4,320.78-2,012.64

Finding the Fourth Proportional to 3,131.94, 4,320.78 and 2,012.64

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Solution

The fourth proportional to 3,131.94, 4,320.78 and 2,012.64 is: 2,776.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.94 : 4,320.78 = 2,012.64 : x
  2. Step 2: Convert to fraction form
    3,131.94/4,320.78 = 2,012.64/x
  3. Step 3: Cross multiply
    3,131.94x = 4,320.78 × 2,012.64
  4. Step 4: Simplify right side
    3,131.94x = 8,696,174.66
  5. Step 5: Solve for x
    x = 8,696,174.66/3,131.94
  6. Step 6: Final answer
    x = 2,776.61

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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.