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Finding the Fourth Proportional to 3,324, 4,986 and 1,272

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Solution

The fourth proportional to 3,324, 4,986 and 1,272 is: 1,908

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,324 : 4,986 = 1,272 : x
  2. Step 2: Convert to fraction form
    3,324/4,986 = 1,272/x
  3. Step 3: Cross multiply
    3,324x = 4,986 × 1,272
  4. Step 4: Simplify right side
    3,324x = 6,342,192
  5. Step 5: Solve for x
    x = 6,342,192/3,324
  6. Step 6: Final answer
    x = 1,908

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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.