Home / 1,984.81-2,739.04-1,198.71

Finding the Fourth Proportional to 1,984.81, 2,739.04 and 1,198.71

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Solution

The fourth proportional to 1,984.81, 2,739.04 and 1,198.71 is: 1,654.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.81 : 2,739.04 = 1,198.71 : x
  2. Step 2: Convert to fraction form
    1,984.81/2,739.04 = 1,198.71/x
  3. Step 3: Cross multiply
    1,984.81x = 2,739.04 × 1,198.71
  4. Step 4: Simplify right side
    1,984.81x = 3,283,314.64
  5. Step 5: Solve for x
    x = 3,283,314.64/1,984.81
  6. Step 6: Final answer
    x = 1,654.22

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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.