Home / 3,209.75-4,812.54-2,110.78

Finding the Fourth Proportional to 3,209.75, 4,812.54 and 2,110.78

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Solution

The fourth proportional to 3,209.75, 4,812.54 and 2,110.78 is: 3,164.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.75 : 4,812.54 = 2,110.78 : x
  2. Step 2: Convert to fraction form
    3,209.75/4,812.54 = 2,110.78/x
  3. Step 3: Cross multiply
    3,209.75x = 4,812.54 × 2,110.78
  4. Step 4: Simplify right side
    3,209.75x = 10,158,213.18
  5. Step 5: Solve for x
    x = 10,158,213.18/3,209.75
  6. Step 6: Final answer
    x = 3,164.80

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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.