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Finding the Fourth Proportional to 6,381.07, 9,571.64 and 1,938.79

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Solution

The fourth proportional to 6,381.07, 9,571.64 and 1,938.79 is: 2,908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,381.07 : 9,571.64 = 1,938.79 : x
  2. Step 2: Convert to fraction form
    6,381.07/9,571.64 = 1,938.79/x
  3. Step 3: Cross multiply
    6,381.07x = 9,571.64 × 1,938.79
  4. Step 4: Simplify right side
    6,381.07x = 18,557,399.92
  5. Step 5: Solve for x
    x = 18,557,399.92/6,381.07
  6. Step 6: Final answer
    x = 2,908.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.