Home / 2,107.22-2,906.61-1,279.22

Finding the Fourth Proportional to 2,107.22, 2,906.61 and 1,279.22

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Solution

The fourth proportional to 2,107.22, 2,906.61 and 1,279.22 is: 1,764.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.22 : 2,906.61 = 1,279.22 : x
  2. Step 2: Convert to fraction form
    2,107.22/2,906.61 = 1,279.22/x
  3. Step 3: Cross multiply
    2,107.22x = 2,906.61 × 1,279.22
  4. Step 4: Simplify right side
    2,107.22x = 3,718,193.64
  5. Step 5: Solve for x
    x = 3,718,193.64/2,107.22
  6. Step 6: Final answer
    x = 1,764.50

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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.