Home / 1,986.04-2,979.78-1,896.58

Finding the Fourth Proportional to 1,986.04, 2,979.78 and 1,896.58

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Solution

The fourth proportional to 1,986.04, 2,979.78 and 1,896.58 is: 2,845.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.04 : 2,979.78 = 1,896.58 : x
  2. Step 2: Convert to fraction form
    1,986.04/2,979.78 = 1,896.58/x
  3. Step 3: Cross multiply
    1,986.04x = 2,979.78 × 1,896.58
  4. Step 4: Simplify right side
    1,986.04x = 5,651,391.15
  5. Step 5: Solve for x
    x = 5,651,391.15/1,986.04
  6. Step 6: Final answer
    x = 2,845.56

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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.