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Finding the Fourth Proportional to 3,383.88, 5,076.03 and 1,920.21

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Solution

The fourth proportional to 3,383.88, 5,076.03 and 1,920.21 is: 2,880.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,383.88 : 5,076.03 = 1,920.21 : x
  2. Step 2: Convert to fraction form
    3,383.88/5,076.03 = 1,920.21/x
  3. Step 3: Cross multiply
    3,383.88x = 5,076.03 × 1,920.21
  4. Step 4: Simplify right side
    3,383.88x = 9,747,043.57
  5. Step 5: Solve for x
    x = 9,747,043.57/3,383.88
  6. Step 6: Final answer
    x = 2,880.43

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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.