Home / 2,189.73-3,284.77-1,079.75

Finding the Fourth Proportional to 2,189.73, 3,284.77 and 1,079.75

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Solution

The fourth proportional to 2,189.73, 3,284.77 and 1,079.75 is: 1,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.73 : 3,284.77 = 1,079.75 : x
  2. Step 2: Convert to fraction form
    2,189.73/3,284.77 = 1,079.75/x
  3. Step 3: Cross multiply
    2,189.73x = 3,284.77 × 1,079.75
  4. Step 4: Simplify right side
    2,189.73x = 3,546,719.47
  5. Step 5: Solve for x
    x = 3,546,719.47/2,189.73
  6. Step 6: Final answer
    x = 1,619.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.