Home / 2,211.39-3,314.57-911.25

Finding the Fourth Proportional to 2,211.39, 3,314.57 and 911.25

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Solution

The fourth proportional to 2,211.39, 3,314.57 and 911.25 is: 1,365.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.39 : 3,314.57 = 911.25 : x
  2. Step 2: Convert to fraction form
    2,211.39/3,314.57 = 911.25/x
  3. Step 3: Cross multiply
    2,211.39x = 3,314.57 × 911.25
  4. Step 4: Simplify right side
    2,211.39x = 3,020,397.36
  5. Step 5: Solve for x
    x = 3,020,397.36/2,211.39
  6. Step 6: Final answer
    x = 1,365.84

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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.