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Finding the Fourth Proportional to 6,881.80, 9,497.22 and 3,897.48

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Solution

The fourth proportional to 6,881.80, 9,497.22 and 3,897.48 is: 5,378.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,881.80 : 9,497.22 = 3,897.48 : x
  2. Step 2: Convert to fraction form
    6,881.80/9,497.22 = 3,897.48/x
  3. Step 3: Cross multiply
    6,881.80x = 9,497.22 × 3,897.48
  4. Step 4: Simplify right side
    6,881.80x = 37,015,225.01
  5. Step 5: Solve for x
    x = 37,015,225.01/6,881.80
  6. Step 6: Final answer
    x = 5,378.71

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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.