Home / 3,361.80-4,640.50-2,887.78

Finding the Fourth Proportional to 3,361.80, 4,640.50 and 2,887.78

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Solution

The fourth proportional to 3,361.80, 4,640.50 and 2,887.78 is: 3,986.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,361.80 : 4,640.50 = 2,887.78 : x
  2. Step 2: Convert to fraction form
    3,361.80/4,640.50 = 2,887.78/x
  3. Step 3: Cross multiply
    3,361.80x = 4,640.50 × 2,887.78
  4. Step 4: Simplify right side
    3,361.80x = 13,400,743.09
  5. Step 5: Solve for x
    x = 13,400,743.09/3,361.80
  6. Step 6: Final answer
    x = 3,986.18

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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.