Home / 1,968.67-2,716.91-1,129.58

Finding the Fourth Proportional to 1,968.67, 2,716.91 and 1,129.58

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Solution

The fourth proportional to 1,968.67, 2,716.91 and 1,129.58 is: 1,558.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.67 : 2,716.91 = 1,129.58 : x
  2. Step 2: Convert to fraction form
    1,968.67/2,716.91 = 1,129.58/x
  3. Step 3: Cross multiply
    1,968.67x = 2,716.91 × 1,129.58
  4. Step 4: Simplify right side
    1,968.67x = 3,068,962.39
  5. Step 5: Solve for x
    x = 3,068,962.39/1,968.67
  6. Step 6: Final answer
    x = 1,558.90

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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.