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Finding the Fourth Proportional to 6,807.78, 9,391.68 and 4,449.60

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Solution

The fourth proportional to 6,807.78, 9,391.68 and 4,449.60 is: 6,138.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,807.78 : 9,391.68 = 4,449.60 : x
  2. Step 2: Convert to fraction form
    6,807.78/9,391.68 = 4,449.60/x
  3. Step 3: Cross multiply
    6,807.78x = 9,391.68 × 4,449.60
  4. Step 4: Simplify right side
    6,807.78x = 41,789,219.33
  5. Step 5: Solve for x
    x = 41,789,219.33/6,807.78
  6. Step 6: Final answer
    x = 6,138.45

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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.