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Finding the Fourth Proportional to 6,381.79, 9,568.94 and 1,938.13

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Solution

The fourth proportional to 6,381.79, 9,568.94 and 1,938.13 is: 2,906.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,381.79 : 9,568.94 = 1,938.13 : x
  2. Step 2: Convert to fraction form
    6,381.79/9,568.94 = 1,938.13/x
  3. Step 3: Cross multiply
    6,381.79x = 9,568.94 × 1,938.13
  4. Step 4: Simplify right side
    6,381.79x = 18,545,816.07
  5. Step 5: Solve for x
    x = 18,545,816.07/6,381.79
  6. Step 6: Final answer
    x = 2,906.05

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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.