Home / 2,211.39-3,316.82-1,211.03

Finding the Fourth Proportional to 2,211.39, 3,316.82 and 1,211.03

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Solution

The fourth proportional to 2,211.39, 3,316.82 and 1,211.03 is: 1,816.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.39 : 3,316.82 = 1,211.03 : x
  2. Step 2: Convert to fraction form
    2,211.39/3,316.82 = 1,211.03/x
  3. Step 3: Cross multiply
    2,211.39x = 3,316.82 × 1,211.03
  4. Step 4: Simplify right side
    2,211.39x = 4,016,779.84
  5. Step 5: Solve for x
    x = 4,016,779.84/2,211.39
  6. Step 6: Final answer
    x = 1,816.40

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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.