Home / 2,838.60-4,249.44-2,111.40

Finding the Fourth Proportional to 2,838.60, 4,249.44 and 2,111.40

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Solution

The fourth proportional to 2,838.60, 4,249.44 and 2,111.40 is: 3,160.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.60 : 4,249.44 = 2,111.40 : x
  2. Step 2: Convert to fraction form
    2,838.60/4,249.44 = 2,111.40/x
  3. Step 3: Cross multiply
    2,838.60x = 4,249.44 × 2,111.40
  4. Step 4: Simplify right side
    2,838.60x = 8,972,267.62
  5. Step 5: Solve for x
    x = 8,972,267.62/2,838.60
  6. Step 6: Final answer
    x = 3,160.81

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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.