Home / 3,220.28-4,829.30-911.24

Finding the Fourth Proportional to 3,220.28, 4,829.30 and 911.24

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Solution

The fourth proportional to 3,220.28, 4,829.30 and 911.24 is: 1,366.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.28 : 4,829.30 = 911.24 : x
  2. Step 2: Convert to fraction form
    3,220.28/4,829.30 = 911.24/x
  3. Step 3: Cross multiply
    3,220.28x = 4,829.30 × 911.24
  4. Step 4: Simplify right side
    3,220.28x = 4,400,651.33
  5. Step 5: Solve for x
    x = 4,400,651.33/3,220.28
  6. Step 6: Final answer
    x = 1,366.54

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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.