Home / 7,981.22-11,967.72-4,286.55

Finding the Fourth Proportional to 7,981.22, 11,967.72 and 4,286.55

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Solution

The fourth proportional to 7,981.22, 11,967.72 and 4,286.55 is: 6,427.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.22 : 11,967.72 = 4,286.55 : x
  2. Step 2: Convert to fraction form
    7,981.22/11,967.72 = 4,286.55/x
  3. Step 3: Cross multiply
    7,981.22x = 11,967.72 × 4,286.55
  4. Step 4: Simplify right side
    7,981.22x = 51,300,291.12
  5. Step 5: Solve for x
    x = 51,300,291.12/7,981.22
  6. Step 6: Final answer
    x = 6,427.63

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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.