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Finding the Fourth Proportional to 6,939.01, 10,405.90 and 2,257.80

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Solution

The fourth proportional to 6,939.01, 10,405.90 and 2,257.80 is: 3,385.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,939.01 : 10,405.90 = 2,257.80 : x
  2. Step 2: Convert to fraction form
    6,939.01/10,405.90 = 2,257.80/x
  3. Step 3: Cross multiply
    6,939.01x = 10,405.90 × 2,257.80
  4. Step 4: Simplify right side
    6,939.01x = 23,494,441.02
  5. Step 5: Solve for x
    x = 23,494,441.02/6,939.01
  6. Step 6: Final answer
    x = 3,385.85

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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.