Home / 1,986.49-2,741.75-1,147.74

Finding the Fourth Proportional to 1,986.49, 2,741.75 and 1,147.74

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Solution

The fourth proportional to 1,986.49, 2,741.75 and 1,147.74 is: 1,584.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.49 : 2,741.75 = 1,147.74 : x
  2. Step 2: Convert to fraction form
    1,986.49/2,741.75 = 1,147.74/x
  3. Step 3: Cross multiply
    1,986.49x = 2,741.75 × 1,147.74
  4. Step 4: Simplify right side
    1,986.49x = 3,146,816.15
  5. Step 5: Solve for x
    x = 3,146,816.15/1,986.49
  6. Step 6: Final answer
    x = 1,584.11

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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.