Home / 2,104.92-2,905.79-1,220.56

Finding the Fourth Proportional to 2,104.92, 2,905.79 and 1,220.56

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Solution

The fourth proportional to 2,104.92, 2,905.79 and 1,220.56 is: 1,684.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.92 : 2,905.79 = 1,220.56 : x
  2. Step 2: Convert to fraction form
    2,104.92/2,905.79 = 1,220.56/x
  3. Step 3: Cross multiply
    2,104.92x = 2,905.79 × 1,220.56
  4. Step 4: Simplify right side
    2,104.92x = 3,546,677.68
  5. Step 5: Solve for x
    x = 3,546,677.68/2,104.92
  6. Step 6: Final answer
    x = 1,684.95

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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.