Home / 3,219.36-4,829.28-911.04

Finding the Fourth Proportional to 3,219.36, 4,829.28 and 911.04

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Solution

The fourth proportional to 3,219.36, 4,829.28 and 911.04 is: 1,366.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.36 : 4,829.28 = 911.04 : x
  2. Step 2: Convert to fraction form
    3,219.36/4,829.28 = 911.04/x
  3. Step 3: Cross multiply
    3,219.36x = 4,829.28 × 911.04
  4. Step 4: Simplify right side
    3,219.36x = 4,399,667.25
  5. Step 5: Solve for x
    x = 4,399,667.25/3,219.36
  6. Step 6: Final answer
    x = 1,366.63

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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.