Home / 3,122.60-4,309.79-2,004.95

Finding the Fourth Proportional to 3,122.60, 4,309.79 and 2,004.95

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Solution

The fourth proportional to 3,122.60, 4,309.79 and 2,004.95 is: 2,767.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.60 : 4,309.79 = 2,004.95 : x
  2. Step 2: Convert to fraction form
    3,122.60/4,309.79 = 2,004.95/x
  3. Step 3: Cross multiply
    3,122.60x = 4,309.79 × 2,004.95
  4. Step 4: Simplify right side
    3,122.60x = 8,640,914.21
  5. Step 5: Solve for x
    x = 8,640,914.21/3,122.60
  6. Step 6: Final answer
    x = 2,767.22

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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.