Home / 3,220.75-4,829.35-998.97

Finding the Fourth Proportional to 3,220.75, 4,829.35 and 998.97

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Solution

The fourth proportional to 3,220.75, 4,829.35 and 998.97 is: 1,497.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.75 : 4,829.35 = 998.97 : x
  2. Step 2: Convert to fraction form
    3,220.75/4,829.35 = 998.97/x
  3. Step 3: Cross multiply
    3,220.75x = 4,829.35 × 998.97
  4. Step 4: Simplify right side
    3,220.75x = 4,824,363.70
  5. Step 5: Solve for x
    x = 4,824,363.70/3,220.75
  6. Step 6: Final answer
    x = 1,497.90

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1.5x scale

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.