Home / 1,936.63-2,672.26-1,272.21

Finding the Fourth Proportional to 1,936.63, 2,672.26 and 1,272.21

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Solution

The fourth proportional to 1,936.63, 2,672.26 and 1,272.21 is: 1,755.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936.63 : 2,672.26 = 1,272.21 : x
  2. Step 2: Convert to fraction form
    1,936.63/2,672.26 = 1,272.21/x
  3. Step 3: Cross multiply
    1,936.63x = 2,672.26 × 1,272.21
  4. Step 4: Simplify right side
    1,936.63x = 3,399,675.89
  5. Step 5: Solve for x
    x = 3,399,675.89/1,936.63
  6. Step 6: Final answer
    x = 1,755.46

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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.