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Finding the Fourth Proportional to 6,800.32, 9,384.42 and 3,969.64

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Solution

The fourth proportional to 6,800.32, 9,384.42 and 3,969.64 is: 5,478.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,800.32 : 9,384.42 = 3,969.64 : x
  2. Step 2: Convert to fraction form
    6,800.32/9,384.42 = 3,969.64/x
  3. Step 3: Cross multiply
    6,800.32x = 9,384.42 × 3,969.64
  4. Step 4: Simplify right side
    6,800.32x = 37,252,769.01
  5. Step 5: Solve for x
    x = 37,252,769.01/6,800.32
  6. Step 6: Final answer
    x = 5,478.09

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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.