Home / 6,665.75-9,198.74-3,871.43

Finding the Fourth Proportional to 6,665.75, 9,198.74 and 3,871.43

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Solution

The fourth proportional to 6,665.75, 9,198.74 and 3,871.43 is: 5,342.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,665.75 : 9,198.74 = 3,871.43 : x
  2. Step 2: Convert to fraction form
    6,665.75/9,198.74 = 3,871.43/x
  3. Step 3: Cross multiply
    6,665.75x = 9,198.74 × 3,871.43
  4. Step 4: Simplify right side
    6,665.75x = 35,612,258.64
  5. Step 5: Solve for x
    x = 35,612,258.64/6,665.75
  6. Step 6: Final answer
    x = 5,342.57

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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.