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Finding the Fourth Proportional to 4,908.62, 7,360.52 and 1,620.42

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Solution

The fourth proportional to 4,908.62, 7,360.52 and 1,620.42 is: 2,429.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,908.62 : 7,360.52 = 1,620.42 : x
  2. Step 2: Convert to fraction form
    4,908.62/7,360.52 = 1,620.42/x
  3. Step 3: Cross multiply
    4,908.62x = 7,360.52 × 1,620.42
  4. Step 4: Simplify right side
    4,908.62x = 11,927,133.82
  5. Step 5: Solve for x
    x = 11,927,133.82/4,908.62
  6. Step 6: Final answer
    x = 2,429.83

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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.