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Finding the Fourth Proportional to 3,019.96, 4,529.22 and 911.17

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Solution

The fourth proportional to 3,019.96, 4,529.22 and 911.17 is: 1,366.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,019.96 : 4,529.22 = 911.17 : x
  2. Step 2: Convert to fraction form
    3,019.96/4,529.22 = 911.17/x
  3. Step 3: Cross multiply
    3,019.96x = 4,529.22 × 911.17
  4. Step 4: Simplify right side
    3,019.96x = 4,126,889.39
  5. Step 5: Solve for x
    x = 4,126,889.39/3,019.96
  6. Step 6: Final answer
    x = 1,366.54

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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.