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Finding the Fourth Proportional to 6,219, 9,331.20 and 3,102.12

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Solution

The fourth proportional to 6,219, 9,331.20 and 3,102.12 is: 4,654.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,219 : 9,331.20 = 3,102.12 : x
  2. Step 2: Convert to fraction form
    6,219/9,331.20 = 3,102.12/x
  3. Step 3: Cross multiply
    6,219x = 9,331.20 × 3,102.12
  4. Step 4: Simplify right side
    6,219x = 28,946,502.14
  5. Step 5: Solve for x
    x = 28,946,502.14/6,219
  6. Step 6: Final answer
    x = 4,654.53

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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.