Home / 4,078.75-6,121.20-2,985.93

Finding the Fourth Proportional to 4,078.75, 6,121.20 and 2,985.93

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Solution

The fourth proportional to 4,078.75, 6,121.20 and 2,985.93 is: 4,481.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.75 : 6,121.20 = 2,985.93 : x
  2. Step 2: Convert to fraction form
    4,078.75/6,121.20 = 2,985.93/x
  3. Step 3: Cross multiply
    4,078.75x = 6,121.20 × 2,985.93
  4. Step 4: Simplify right side
    4,078.75x = 18,277,474.72
  5. Step 5: Solve for x
    x = 18,277,474.72/4,078.75
  6. Step 6: Final answer
    x = 4,481.15

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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.