Home / 3,028.62-4,178.39-1,909.14

Finding the Fourth Proportional to 3,028.62, 4,178.39 and 1,909.14

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Solution

The fourth proportional to 3,028.62, 4,178.39 and 1,909.14 is: 2,633.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,028.62 : 4,178.39 = 1,909.14 : x
  2. Step 2: Convert to fraction form
    3,028.62/4,178.39 = 1,909.14/x
  3. Step 3: Cross multiply
    3,028.62x = 4,178.39 × 1,909.14
  4. Step 4: Simplify right side
    3,028.62x = 7,977,101.05
  5. Step 5: Solve for x
    x = 7,977,101.05/3,028.62
  6. Step 6: Final answer
    x = 2,633.91

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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.