Home / 1,968.49-2,716.60-1,129.43

Finding the Fourth Proportional to 1,968.49, 2,716.60 and 1,129.43

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Solution

The fourth proportional to 1,968.49, 2,716.60 and 1,129.43 is: 1,558.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.49 : 2,716.60 = 1,129.43 : x
  2. Step 2: Convert to fraction form
    1,968.49/2,716.60 = 1,129.43/x
  3. Step 3: Cross multiply
    1,968.49x = 2,716.60 × 1,129.43
  4. Step 4: Simplify right side
    1,968.49x = 3,068,209.54
  5. Step 5: Solve for x
    x = 3,068,209.54/1,968.49
  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.