Home / 3,280.14-4,917.75-2,111.43

Finding the Fourth Proportional to 3,280.14, 4,917.75 and 2,111.43

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Solution

The fourth proportional to 3,280.14, 4,917.75 and 2,111.43 is: 3,165.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.14 : 4,917.75 = 2,111.43 : x
  2. Step 2: Convert to fraction form
    3,280.14/4,917.75 = 2,111.43/x
  3. Step 3: Cross multiply
    3,280.14x = 4,917.75 × 2,111.43
  4. Step 4: Simplify right side
    3,280.14x = 10,383,484.88
  5. Step 5: Solve for x
    x = 10,383,484.88/3,280.14
  6. Step 6: Final answer
    x = 3,165.56

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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.