Home / 3,121.01-4,680.21-1,270.86

Finding the Fourth Proportional to 3,121.01, 4,680.21 and 1,270.86

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Solution

The fourth proportional to 3,121.01, 4,680.21 and 1,270.86 is: 1,905.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.01 : 4,680.21 = 1,270.86 : x
  2. Step 2: Convert to fraction form
    3,121.01/4,680.21 = 1,270.86/x
  3. Step 3: Cross multiply
    3,121.01x = 4,680.21 × 1,270.86
  4. Step 4: Simplify right side
    3,121.01x = 5,947,885.33
  5. Step 5: Solve for x
    x = 5,947,885.33/3,121.01
  6. Step 6: Final answer
    x = 1,905.76

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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.