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Finding the Fourth Proportional to 6,879.60, 9,493.89 and 3,735.78

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Solution

The fourth proportional to 6,879.60, 9,493.89 and 3,735.78 is: 5,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,879.60 : 9,493.89 = 3,735.78 : x
  2. Step 2: Convert to fraction form
    6,879.60/9,493.89 = 3,735.78/x
  3. Step 3: Cross multiply
    6,879.60x = 9,493.89 × 3,735.78
  4. Step 4: Simplify right side
    6,879.60x = 35,467,084.38
  5. Step 5: Solve for x
    x = 35,467,084.38/6,879.60
  6. Step 6: Final answer
    x = 5,155.40

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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.