Home / 4,120.98-6,189.60-3,540.72

Finding the Fourth Proportional to 4,120.98, 6,189.60 and 3,540.72

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Solution

The fourth proportional to 4,120.98, 6,189.60 and 3,540.72 is: 5,318.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.98 : 6,189.60 = 3,540.72 : x
  2. Step 2: Convert to fraction form
    4,120.98/6,189.60 = 3,540.72/x
  3. Step 3: Cross multiply
    4,120.98x = 6,189.60 × 3,540.72
  4. Step 4: Simplify right side
    4,120.98x = 21,915,640.51
  5. Step 5: Solve for x
    x = 21,915,640.51/4,120.98
  6. Step 6: Final answer
    x = 5,318.07

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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.