Home / 1,986.67-2,979.12-1,165.33

Finding the Fourth Proportional to 1,986.67, 2,979.12 and 1,165.33

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Solution

The fourth proportional to 1,986.67, 2,979.12 and 1,165.33 is: 1,747.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.67 : 2,979.12 = 1,165.33 : x
  2. Step 2: Convert to fraction form
    1,986.67/2,979.12 = 1,165.33/x
  3. Step 3: Cross multiply
    1,986.67x = 2,979.12 × 1,165.33
  4. Step 4: Simplify right side
    1,986.67x = 3,471,650.46
  5. Step 5: Solve for x
    x = 3,471,650.46/1,986.67
  6. Step 6: Final answer
    x = 1,747.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.