Home / 5,729.21-7,906.64-3,212.15

Finding the Fourth Proportional to 5,729.21, 7,906.64 and 3,212.15

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Solution

The fourth proportional to 5,729.21, 7,906.64 and 3,212.15 is: 4,432.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,729.21 : 7,906.64 = 3,212.15 : x
  2. Step 2: Convert to fraction form
    5,729.21/7,906.64 = 3,212.15/x
  3. Step 3: Cross multiply
    5,729.21x = 7,906.64 × 3,212.15
  4. Step 4: Simplify right side
    5,729.21x = 25,397,258.08
  5. Step 5: Solve for x
    x = 25,397,258.08/5,729.21
  6. Step 6: Final answer
    x = 4,432.95

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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.