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Finding the Fourth Proportional to 6,807.87, 9,394.56 and 3,975.39

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Solution

The fourth proportional to 6,807.87, 9,394.56 and 3,975.39 is: 5,485.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,807.87 : 9,394.56 = 3,975.39 : x
  2. Step 2: Convert to fraction form
    6,807.87/9,394.56 = 3,975.39/x
  3. Step 3: Cross multiply
    6,807.87x = 9,394.56 × 3,975.39
  4. Step 4: Simplify right side
    6,807.87x = 37,347,039.88
  5. Step 5: Solve for x
    x = 37,347,039.88/6,807.87
  6. Step 6: Final answer
    x = 5,485.86

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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.