Home / 2,921.73-4,361.79-2,819.22

Finding the Fourth Proportional to 2,921.73, 4,361.79 and 2,819.22

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Solution

The fourth proportional to 2,921.73, 4,361.79 and 2,819.22 is: 4,208.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.73 : 4,361.79 = 2,819.22 : x
  2. Step 2: Convert to fraction form
    2,921.73/4,361.79 = 2,819.22/x
  3. Step 3: Cross multiply
    2,921.73x = 4,361.79 × 2,819.22
  4. Step 4: Simplify right side
    2,921.73x = 12,296,845.60
  5. Step 5: Solve for x
    x = 12,296,845.60/2,921.73
  6. Step 6: Final answer
    x = 4,208.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.