Home / 3,879.35-5,353.44-2,110.99

Finding the Fourth Proportional to 3,879.35, 5,353.44 and 2,110.99

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Solution

The fourth proportional to 3,879.35, 5,353.44 and 2,110.99 is: 2,913.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.35 : 5,353.44 = 2,110.99 : x
  2. Step 2: Convert to fraction form
    3,879.35/5,353.44 = 2,110.99/x
  3. Step 3: Cross multiply
    3,879.35x = 5,353.44 × 2,110.99
  4. Step 4: Simplify right side
    3,879.35x = 11,301,058.31
  5. Step 5: Solve for x
    x = 11,301,058.31/3,879.35
  6. Step 6: Final answer
    x = 2,913.13

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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.