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Finding the Fourth Proportional to 3,383.40, 5,067.90 and 2,807.40

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Solution

The fourth proportional to 3,383.40, 5,067.90 and 2,807.40 is: 4,205.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,383.40 : 5,067.90 = 2,807.40 : x
  2. Step 2: Convert to fraction form
    3,383.40/5,067.90 = 2,807.40/x
  3. Step 3: Cross multiply
    3,383.40x = 5,067.90 × 2,807.40
  4. Step 4: Simplify right side
    3,383.40x = 14,227,622.46
  5. Step 5: Solve for x
    x = 14,227,622.46/3,383.40
  6. Step 6: Final answer
    x = 4,205.13

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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.