Home / 3,945.96-5,918.94-2,215.80

Finding the Fourth Proportional to 3,945.96, 5,918.94 and 2,215.80

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Solution

The fourth proportional to 3,945.96, 5,918.94 and 2,215.80 is: 3,323.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.96 : 5,918.94 = 2,215.80 : x
  2. Step 2: Convert to fraction form
    3,945.96/5,918.94 = 2,215.80/x
  3. Step 3: Cross multiply
    3,945.96x = 5,918.94 × 2,215.80
  4. Step 4: Simplify right side
    3,945.96x = 13,115,187.25
  5. Step 5: Solve for x
    x = 13,115,187.25/3,945.96
  6. Step 6: Final answer
    x = 3,323.70

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Similar ratio
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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.