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Finding the Fourth Proportional to 6,800.55, 9,384.48 and 3,968.09

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Solution

The fourth proportional to 6,800.55, 9,384.48 and 3,968.09 is: 5,475.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,800.55 : 9,384.48 = 3,968.09 : x
  2. Step 2: Convert to fraction form
    6,800.55/9,384.48 = 3,968.09/x
  3. Step 3: Cross multiply
    6,800.55x = 9,384.48 × 3,968.09
  4. Step 4: Simplify right side
    6,800.55x = 37,238,414.32
  5. Step 5: Solve for x
    x = 37,238,414.32/6,800.55
  6. Step 6: Final answer
    x = 5,475.79

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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.