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Finding the Fourth Proportional to 1,936.63, 2,672.63 and 1,272.97

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Solution

The fourth proportional to 1,936.63, 2,672.63 and 1,272.97 is: 1,756.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936.63 : 2,672.63 = 1,272.97 : x
  2. Step 2: Convert to fraction form
    1,936.63/2,672.63 = 1,272.97/x
  3. Step 3: Cross multiply
    1,936.63x = 2,672.63 × 1,272.97
  4. Step 4: Simplify right side
    1,936.63x = 3,402,177.81
  5. Step 5: Solve for x
    x = 3,402,177.81/1,936.63
  6. Step 6: Final answer
    x = 1,756.75

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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.