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Finding the Fourth Proportional to 6,222, 9,334.80 and 2,118

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Solution

The fourth proportional to 6,222, 9,334.80 and 2,118 is: 3,177.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,222 : 9,334.80 = 2,118 : x
  2. Step 2: Convert to fraction form
    6,222/9,334.80 = 2,118/x
  3. Step 3: Cross multiply
    6,222x = 9,334.80 × 2,118
  4. Step 4: Simplify right side
    6,222x = 19,771,106.40
  5. Step 5: Solve for x
    x = 19,771,106.40/6,222
  6. Step 6: Final answer
    x = 3,177.61

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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.