Home / 1,968.29-2,716.19-1,129.49

Finding the Fourth Proportional to 1,968.29, 2,716.19 and 1,129.49

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Solution

The fourth proportional to 1,968.29, 2,716.19 and 1,129.49 is: 1,558.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.29 : 2,716.19 = 1,129.49 : x
  2. Step 2: Convert to fraction form
    1,968.29/2,716.19 = 1,129.49/x
  3. Step 3: Cross multiply
    1,968.29x = 2,716.19 × 1,129.49
  4. Step 4: Simplify right side
    1,968.29x = 3,067,898.69
  5. Step 5: Solve for x
    x = 3,067,898.69/1,968.29
  6. Step 6: Final answer
    x = 1,558.66

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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.