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Finding the Fourth Proportional to 6,905.70, 10,352.70 and 2,520.60

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Solution

The fourth proportional to 6,905.70, 10,352.70 and 2,520.60 is: 3,778.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,905.70 : 10,352.70 = 2,520.60 : x
  2. Step 2: Convert to fraction form
    6,905.70/10,352.70 = 2,520.60/x
  3. Step 3: Cross multiply
    6,905.70x = 10,352.70 × 2,520.60
  4. Step 4: Simplify right side
    6,905.70x = 26,095,015.62
  5. Step 5: Solve for x
    x = 26,095,015.62/6,905.70
  6. Step 6: Final answer
    x = 3,778.76

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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.