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Finding the Fourth Proportional to 6,640.76, 9,944.71 and 3,858.99

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Solution

The fourth proportional to 6,640.76, 9,944.71 and 3,858.99 is: 5,778.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.76 : 9,944.71 = 3,858.99 : x
  2. Step 2: Convert to fraction form
    6,640.76/9,944.71 = 3,858.99/x
  3. Step 3: Cross multiply
    6,640.76x = 9,944.71 × 3,858.99
  4. Step 4: Simplify right side
    6,640.76x = 38,376,536.44
  5. Step 5: Solve for x
    x = 38,376,536.44/6,640.76
  6. Step 6: Final answer
    x = 5,778.94

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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.