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Finding the Fourth Proportional to 3,195.65, 4,792.95 and 1,636.80

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Solution

The fourth proportional to 3,195.65, 4,792.95 and 1,636.80 is: 2,454.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,195.65 : 4,792.95 = 1,636.80 : x
  2. Step 2: Convert to fraction form
    3,195.65/4,792.95 = 1,636.80/x
  3. Step 3: Cross multiply
    3,195.65x = 4,792.95 × 1,636.80
  4. Step 4: Simplify right side
    3,195.65x = 7,845,100.56
  5. Step 5: Solve for x
    x = 7,845,100.56/3,195.65
  6. Step 6: Final answer
    x = 2,454.93

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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.