Home / 2,190.78-3,006.45-2,067.12

Finding the Fourth Proportional to 2,190.78, 3,006.45 and 2,067.12

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Solution

The fourth proportional to 2,190.78, 3,006.45 and 2,067.12 is: 2,836.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.78 : 3,006.45 = 2,067.12 : x
  2. Step 2: Convert to fraction form
    2,190.78/3,006.45 = 2,067.12/x
  3. Step 3: Cross multiply
    2,190.78x = 3,006.45 × 2,067.12
  4. Step 4: Simplify right side
    2,190.78x = 6,214,692.92
  5. Step 5: Solve for x
    x = 6,214,692.92/2,190.78
  6. Step 6: Final answer
    x = 2,836.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.