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Finding the Fourth Proportional to 6,921, 10,381.50 and 2,304.36

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Solution

The fourth proportional to 6,921, 10,381.50 and 2,304.36 is: 3,456.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921 : 10,381.50 = 2,304.36 : x
  2. Step 2: Convert to fraction form
    6,921/10,381.50 = 2,304.36/x
  3. Step 3: Cross multiply
    6,921x = 10,381.50 × 2,304.36
  4. Step 4: Simplify right side
    6,921x = 23,922,713.34
  5. Step 5: Solve for x
    x = 23,922,713.34/6,921
  6. Step 6: Final answer
    x = 3,456.54

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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.