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Finding the Fourth Proportional to 7,082.80, 9,773.38 and 3,895.57

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Solution

The fourth proportional to 7,082.80, 9,773.38 and 3,895.57 is: 5,375.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,082.80 : 9,773.38 = 3,895.57 : x
  2. Step 2: Convert to fraction form
    7,082.80/9,773.38 = 3,895.57/x
  3. Step 3: Cross multiply
    7,082.80x = 9,773.38 × 3,895.57
  4. Step 4: Simplify right side
    7,082.80x = 38,072,885.93
  5. Step 5: Solve for x
    x = 38,072,885.93/7,082.80
  6. Step 6: Final answer
    x = 5,375.40

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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.