Home / 9,121.82-13,684.55-3,278.88

Finding the Fourth Proportional to 9,121.82, 13,684.55 and 3,278.88

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Solution

The fourth proportional to 9,121.82, 13,684.55 and 3,278.88 is: 4,918.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.82 : 13,684.55 = 3,278.88 : x
  2. Step 2: Convert to fraction form
    9,121.82/13,684.55 = 3,278.88/x
  3. Step 3: Cross multiply
    9,121.82x = 13,684.55 × 3,278.88
  4. Step 4: Simplify right side
    9,121.82x = 44,869,980.91
  5. Step 5: Solve for x
    x = 44,869,980.91/9,121.82
  6. Step 6: Final answer
    x = 4,918.98

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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.