Home / 2,164.11-2,986.55-1,279.59

Finding the Fourth Proportional to 2,164.11, 2,986.55 and 1,279.59

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Solution

The fourth proportional to 2,164.11, 2,986.55 and 1,279.59 is: 1,765.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,164.11 : 2,986.55 = 1,279.59 : x
  2. Step 2: Convert to fraction form
    2,164.11/2,986.55 = 1,279.59/x
  3. Step 3: Cross multiply
    2,164.11x = 2,986.55 × 1,279.59
  4. Step 4: Simplify right side
    2,164.11x = 3,821,553.12
  5. Step 5: Solve for x
    x = 3,821,553.12/2,164.11
  6. Step 6: Final answer
    x = 1,765.88

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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.