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Finding the Fourth Proportional to 4,908.14, 7,361.18 and 1,620.48

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Solution

The fourth proportional to 4,908.14, 7,361.18 and 1,620.48 is: 2,430.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,908.14 : 7,361.18 = 1,620.48 : x
  2. Step 2: Convert to fraction form
    4,908.14/7,361.18 = 1,620.48/x
  3. Step 3: Cross multiply
    4,908.14x = 7,361.18 × 1,620.48
  4. Step 4: Simplify right side
    4,908.14x = 11,928,644.97
  5. Step 5: Solve for x
    x = 11,928,644.97/4,908.14
  6. Step 6: Final answer
    x = 2,430.38

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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.