Home / 3,520.82-4,857.81-2,122.58

Finding the Fourth Proportional to 3,520.82, 4,857.81 and 2,122.58

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Solution

The fourth proportional to 3,520.82, 4,857.81 and 2,122.58 is: 2,928.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.82 : 4,857.81 = 2,122.58 : x
  2. Step 2: Convert to fraction form
    3,520.82/4,857.81 = 2,122.58/x
  3. Step 3: Cross multiply
    3,520.82x = 4,857.81 × 2,122.58
  4. Step 4: Simplify right side
    3,520.82x = 10,311,090.35
  5. Step 5: Solve for x
    x = 10,311,090.35/3,520.82
  6. Step 6: Final answer
    x = 2,928.60

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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.