Home / 2,171.09-2,996.16-1,286.75

Finding the Fourth Proportional to 2,171.09, 2,996.16 and 1,286.75

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Solution

The fourth proportional to 2,171.09, 2,996.16 and 1,286.75 is: 1,775.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.09 : 2,996.16 = 1,286.75 : x
  2. Step 2: Convert to fraction form
    2,171.09/2,996.16 = 1,286.75/x
  3. Step 3: Cross multiply
    2,171.09x = 2,996.16 × 1,286.75
  4. Step 4: Simplify right side
    2,171.09x = 3,855,308.88
  5. Step 5: Solve for x
    x = 3,855,308.88/2,171.09
  6. Step 6: Final answer
    x = 1,775.75

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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.