Home / 1,761.88-2,428.86-1,236.28

Finding the Fourth Proportional to 1,761.88, 2,428.86 and 1,236.28

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Solution

The fourth proportional to 1,761.88, 2,428.86 and 1,236.28 is: 1,704.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.88 : 2,428.86 = 1,236.28 : x
  2. Step 2: Convert to fraction form
    1,761.88/2,428.86 = 1,236.28/x
  3. Step 3: Cross multiply
    1,761.88x = 2,428.86 × 1,236.28
  4. Step 4: Simplify right side
    1,761.88x = 3,002,751.04
  5. Step 5: Solve for x
    x = 3,002,751.04/1,761.88
  6. Step 6: Final answer
    x = 1,704.29

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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.