Home / 2,839.75-3,918.87-1,661.62

Finding the Fourth Proportional to 2,839.75, 3,918.87 and 1,661.62

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Solution

The fourth proportional to 2,839.75, 3,918.87 and 1,661.62 is: 2,293.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.75 : 3,918.87 = 1,661.62 : x
  2. Step 2: Convert to fraction form
    2,839.75/3,918.87 = 1,661.62/x
  3. Step 3: Cross multiply
    2,839.75x = 3,918.87 × 1,661.62
  4. Step 4: Simplify right side
    2,839.75x = 6,511,672.77
  5. Step 5: Solve for x
    x = 6,511,672.77/2,839.75
  6. Step 6: Final answer
    x = 2,293.04

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1.5x scale

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.