Home / 2,801.86-4,198.12-1,911.07

Finding the Fourth Proportional to 2,801.86, 4,198.12 and 1,911.07

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Solution

The fourth proportional to 2,801.86, 4,198.12 and 1,911.07 is: 2,863.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.86 : 4,198.12 = 1,911.07 : x
  2. Step 2: Convert to fraction form
    2,801.86/4,198.12 = 1,911.07/x
  3. Step 3: Cross multiply
    2,801.86x = 4,198.12 × 1,911.07
  4. Step 4: Simplify right side
    2,801.86x = 8,022,901.19
  5. Step 5: Solve for x
    x = 8,022,901.19/2,801.86
  6. Step 6: Final answer
    x = 2,863.42

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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.