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Finding the Fourth Proportional to 7,065, 10,601.82 and 2,961

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Solution

The fourth proportional to 7,065, 10,601.82 and 2,961 is: 4,443.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065 : 10,601.82 = 2,961 : x
  2. Step 2: Convert to fraction form
    7,065/10,601.82 = 2,961/x
  3. Step 3: Cross multiply
    7,065x = 10,601.82 × 2,961
  4. Step 4: Simplify right side
    7,065x = 31,391,989.02
  5. Step 5: Solve for x
    x = 31,391,989.02/7,065
  6. Step 6: Final answer
    x = 4,443.31

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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.