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Finding the Fourth Proportional to 6,847.78, 9,449.78 and 3,863.54

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Solution

The fourth proportional to 6,847.78, 9,449.78 and 3,863.54 is: 5,331.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,847.78 : 9,449.78 = 3,863.54 : x
  2. Step 2: Convert to fraction form
    6,847.78/9,449.78 = 3,863.54/x
  3. Step 3: Cross multiply
    6,847.78x = 9,449.78 × 3,863.54
  4. Step 4: Simplify right side
    6,847.78x = 36,509,603.02
  5. Step 5: Solve for x
    x = 36,509,603.02/6,847.78
  6. Step 6: Final answer
    x = 5,331.60

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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.