Home / 2,811.06-3,878.55-1,879.56

Finding the Fourth Proportional to 2,811.06, 3,878.55 and 1,879.56

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Solution

The fourth proportional to 2,811.06, 3,878.55 and 1,879.56 is: 2,593.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.06 : 3,878.55 = 1,879.56 : x
  2. Step 2: Convert to fraction form
    2,811.06/3,878.55 = 1,879.56/x
  3. Step 3: Cross multiply
    2,811.06x = 3,878.55 × 1,879.56
  4. Step 4: Simplify right side
    2,811.06x = 7,289,967.44
  5. Step 5: Solve for x
    x = 7,289,967.44/2,811.06
  6. Step 6: Final answer
    x = 2,593.32

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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.