Home / 6,840.62-9,440.14-3,855.86

Finding the Fourth Proportional to 6,840.62, 9,440.14 and 3,855.86

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Solution

The fourth proportional to 6,840.62, 9,440.14 and 3,855.86 is: 5,321.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,840.62 : 9,440.14 = 3,855.86 : x
  2. Step 2: Convert to fraction form
    6,840.62/9,440.14 = 3,855.86/x
  3. Step 3: Cross multiply
    6,840.62x = 9,440.14 × 3,855.86
  4. Step 4: Simplify right side
    6,840.62x = 36,399,858.22
  5. Step 5: Solve for x
    x = 36,399,858.22/6,840.62
  6. Step 6: Final answer
    x = 5,321.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.