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Finding the Fourth Proportional to 6,800.39, 9,384.95 and 3,816.41

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Solution

The fourth proportional to 6,800.39, 9,384.95 and 3,816.41 is: 5,266.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,800.39 : 9,384.95 = 3,816.41 : x
  2. Step 2: Convert to fraction form
    6,800.39/9,384.95 = 3,816.41/x
  3. Step 3: Cross multiply
    6,800.39x = 9,384.95 × 3,816.41
  4. Step 4: Simplify right side
    6,800.39x = 35,816,797.95
  5. Step 5: Solve for x
    x = 35,816,797.95/6,800.39
  6. Step 6: Final answer
    x = 5,266.88

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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.