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Finding the Fourth Proportional to 6,318.99, 8,721.94 and 3,667.25

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Solution

The fourth proportional to 6,318.99, 8,721.94 and 3,667.25 is: 5,061.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,318.99 : 8,721.94 = 3,667.25 : x
  2. Step 2: Convert to fraction form
    6,318.99/8,721.94 = 3,667.25/x
  3. Step 3: Cross multiply
    6,318.99x = 8,721.94 × 3,667.25
  4. Step 4: Simplify right side
    6,318.99x = 31,985,534.47
  5. Step 5: Solve for x
    x = 31,985,534.47/6,318.99
  6. Step 6: Final answer
    x = 5,061.81

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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.