Home / 3,879.83-5,354.00-2,111.44

Finding the Fourth Proportional to 3,879.83, 5,354.00 and 2,111.44

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Solution

The fourth proportional to 3,879.83, 5,354.00 and 2,111.44 is: 2,913.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.83 : 5,354.00 = 2,111.44 : x
  2. Step 2: Convert to fraction form
    3,879.83/5,354.00 = 2,111.44/x
  3. Step 3: Cross multiply
    3,879.83x = 5,354.00 × 2,111.44
  4. Step 4: Simplify right side
    3,879.83x = 11,304,655.04
  5. Step 5: Solve for x
    x = 11,304,655.04/3,879.83
  6. Step 6: Final answer
    x = 2,913.70

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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.