Home / 5,921.21-8,171.31-3,268.79

Finding the Fourth Proportional to 5,921.21, 8,171.31 and 3,268.79

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Solution

The fourth proportional to 5,921.21, 8,171.31 and 3,268.79 is: 4,510.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.21 : 8,171.31 = 3,268.79 : x
  2. Step 2: Convert to fraction form
    5,921.21/8,171.31 = 3,268.79/x
  3. Step 3: Cross multiply
    5,921.21x = 8,171.31 × 3,268.79
  4. Step 4: Simplify right side
    5,921.21x = 26,710,255.56
  5. Step 5: Solve for x
    x = 26,710,255.56/5,921.21
  6. Step 6: Final answer
    x = 4,510.95

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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.