Home / 3,954.19-5,456.31-2,185.55

Finding the Fourth Proportional to 3,954.19, 5,456.31 and 2,185.55

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Solution

The fourth proportional to 3,954.19, 5,456.31 and 2,185.55 is: 3,015.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,954.19 : 5,456.31 = 2,185.55 : x
  2. Step 2: Convert to fraction form
    3,954.19/5,456.31 = 2,185.55/x
  3. Step 3: Cross multiply
    3,954.19x = 5,456.31 × 2,185.55
  4. Step 4: Simplify right side
    3,954.19x = 11,925,043.77
  5. Step 5: Solve for x
    x = 11,925,043.77/3,954.19
  6. Step 6: Final answer
    x = 3,015.80

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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.