Home / 5,121.03-7,691.28-3,186.75

Finding the Fourth Proportional to 5,121.03, 7,691.28 and 3,186.75

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Solution

The fourth proportional to 5,121.03, 7,691.28 and 3,186.75 is: 4,786.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.03 : 7,691.28 = 3,186.75 : x
  2. Step 2: Convert to fraction form
    5,121.03/7,691.28 = 3,186.75/x
  3. Step 3: Cross multiply
    5,121.03x = 7,691.28 × 3,186.75
  4. Step 4: Simplify right side
    5,121.03x = 24,510,186.54
  5. Step 5: Solve for x
    x = 24,510,186.54/5,121.03
  6. Step 6: Final answer
    x = 4,786.18

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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.