Home / 3,954.21-5,456.54-2,185.58

Finding the Fourth Proportional to 3,954.21, 5,456.54 and 2,185.58

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Solution

The fourth proportional to 3,954.21, 5,456.54 and 2,185.58 is: 3,015.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,954.21 : 5,456.54 = 2,185.58 : x
  2. Step 2: Convert to fraction form
    3,954.21/5,456.54 = 2,185.58/x
  3. Step 3: Cross multiply
    3,954.21x = 5,456.54 × 2,185.58
  4. Step 4: Simplify right side
    3,954.21x = 11,925,682.87
  5. Step 5: Solve for x
    x = 11,925,682.87/3,954.21
  6. Step 6: Final answer
    x = 3,015.95

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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.