Home / 1,986.66-2,979.05-1,165.19

Finding the Fourth Proportional to 1,986.66, 2,979.05 and 1,165.19

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Solution

The fourth proportional to 1,986.66, 2,979.05 and 1,165.19 is: 1,747.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.66 : 2,979.05 = 1,165.19 : x
  2. Step 2: Convert to fraction form
    1,986.66/2,979.05 = 1,165.19/x
  3. Step 3: Cross multiply
    1,986.66x = 2,979.05 × 1,165.19
  4. Step 4: Simplify right side
    1,986.66x = 3,471,159.27
  5. Step 5: Solve for x
    x = 3,471,159.27/1,986.66
  6. Step 6: Final answer
    x = 1,747.23

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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.