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Finding the Fourth Proportional to 6,661.98, 9,193.91 and 5,721.57

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Solution

The fourth proportional to 6,661.98, 9,193.91 and 5,721.57 is: 7,896.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,661.98 : 9,193.91 = 5,721.57 : x
  2. Step 2: Convert to fraction form
    6,661.98/9,193.91 = 5,721.57/x
  3. Step 3: Cross multiply
    6,661.98x = 9,193.91 × 5,721.57
  4. Step 4: Simplify right side
    6,661.98x = 52,603,571.03
  5. Step 5: Solve for x
    x = 52,603,571.03/6,661.98
  6. Step 6: Final answer
    x = 7,896.09

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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.