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Finding the Fourth Proportional to 6,771.79, 9,344.73 and 3,938.70

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Solution

The fourth proportional to 6,771.79, 9,344.73 and 3,938.70 is: 5,435.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,771.79 : 9,344.73 = 3,938.70 : x
  2. Step 2: Convert to fraction form
    6,771.79/9,344.73 = 3,938.70/x
  3. Step 3: Cross multiply
    6,771.79x = 9,344.73 × 3,938.70
  4. Step 4: Simplify right side
    6,771.79x = 36,806,088.05
  5. Step 5: Solve for x
    x = 36,806,088.05/6,771.79
  6. Step 6: Final answer
    x = 5,435.21

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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.