Home / 3,220.66-4,821.60-1,984.36

Finding the Fourth Proportional to 3,220.66, 4,821.60 and 1,984.36

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Solution

The fourth proportional to 3,220.66, 4,821.60 and 1,984.36 is: 2,970.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.66 : 4,821.60 = 1,984.36 : x
  2. Step 2: Convert to fraction form
    3,220.66/4,821.60 = 1,984.36/x
  3. Step 3: Cross multiply
    3,220.66x = 4,821.60 × 1,984.36
  4. Step 4: Simplify right side
    3,220.66x = 9,567,790.18
  5. Step 5: Solve for x
    x = 9,567,790.18/3,220.66
  6. Step 6: Final answer
    x = 2,970.75

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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.