Home / 3,954.09-5,456.37-2,185.45

Finding the Fourth Proportional to 3,954.09, 5,456.37 and 2,185.45

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Solution

The fourth proportional to 3,954.09, 5,456.37 and 2,185.45 is: 3,015.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,954.09 : 5,456.37 = 2,185.45 : x
  2. Step 2: Convert to fraction form
    3,954.09/5,456.37 = 2,185.45/x
  3. Step 3: Cross multiply
    3,954.09x = 5,456.37 × 2,185.45
  4. Step 4: Simplify right side
    3,954.09x = 11,924,623.82
  5. Step 5: Solve for x
    x = 11,924,623.82/3,954.09
  6. Step 6: Final answer
    x = 3,015.77

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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.