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Finding the Fourth Proportional to 3,144, 4,716 and 2,124.48

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Solution

The fourth proportional to 3,144, 4,716 and 2,124.48 is: 3,186.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,144 : 4,716 = 2,124.48 : x
  2. Step 2: Convert to fraction form
    3,144/4,716 = 2,124.48/x
  3. Step 3: Cross multiply
    3,144x = 4,716 × 2,124.48
  4. Step 4: Simplify right side
    3,144x = 10,019,047.68
  5. Step 5: Solve for x
    x = 10,019,047.68/3,144
  6. Step 6: Final answer
    x = 3,186.72

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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.