Home / 5,121.61-7,682.40-3,268.12

Finding the Fourth Proportional to 5,121.61, 7,682.40 and 3,268.12

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Solution

The fourth proportional to 5,121.61, 7,682.40 and 3,268.12 is: 4,902.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.61 : 7,682.40 = 3,268.12 : x
  2. Step 2: Convert to fraction form
    5,121.61/7,682.40 = 3,268.12/x
  3. Step 3: Cross multiply
    5,121.61x = 7,682.40 × 3,268.12
  4. Step 4: Simplify right side
    5,121.61x = 25,107,005.09
  5. Step 5: Solve for x
    x = 25,107,005.09/5,121.61
  6. Step 6: Final answer
    x = 4,902.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.