Home / 2,853.39-3,939.48-2,188.97

Finding the Fourth Proportional to 2,853.39, 3,939.48 and 2,188.97

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Solution

The fourth proportional to 2,853.39, 3,939.48 and 2,188.97 is: 3,022.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.39 : 3,939.48 = 2,188.97 : x
  2. Step 2: Convert to fraction form
    2,853.39/3,939.48 = 2,188.97/x
  3. Step 3: Cross multiply
    2,853.39x = 3,939.48 × 2,188.97
  4. Step 4: Simplify right side
    2,853.39x = 8,623,383.84
  5. Step 5: Solve for x
    x = 8,623,383.84/2,853.39
  6. Step 6: Final answer
    x = 3,022.15

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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.