Home / 1,986.68-2,741.09-1,147.42

Finding the Fourth Proportional to 1,986.68, 2,741.09 and 1,147.42

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Solution

The fourth proportional to 1,986.68, 2,741.09 and 1,147.42 is: 1,583.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.68 : 2,741.09 = 1,147.42 : x
  2. Step 2: Convert to fraction form
    1,986.68/2,741.09 = 1,147.42/x
  3. Step 3: Cross multiply
    1,986.68x = 2,741.09 × 1,147.42
  4. Step 4: Simplify right side
    1,986.68x = 3,145,170.21
  5. Step 5: Solve for x
    x = 3,145,170.21/1,986.68
  6. Step 6: Final answer
    x = 1,583.13

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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.