Home / 8,211.32-12,318.82-3,283.28

Finding the Fourth Proportional to 8,211.32, 12,318.82 and 3,283.28

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Solution

The fourth proportional to 8,211.32, 12,318.82 and 3,283.28 is: 4,925.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211.32 : 12,318.82 = 3,283.28 : x
  2. Step 2: Convert to fraction form
    8,211.32/12,318.82 = 3,283.28/x
  3. Step 3: Cross multiply
    8,211.32x = 12,318.82 × 3,283.28
  4. Step 4: Simplify right side
    8,211.32x = 40,446,135.33
  5. Step 5: Solve for x
    x = 40,446,135.33/8,211.32
  6. Step 6: Final answer
    x = 4,925.66

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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.