Home / 2,211.78-3,314.70-1,116.93

Finding the Fourth Proportional to 2,211.78, 3,314.70 and 1,116.93

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Solution

The fourth proportional to 2,211.78, 3,314.70 and 1,116.93 is: 1,673.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.78 : 3,314.70 = 1,116.93 : x
  2. Step 2: Convert to fraction form
    2,211.78/3,314.70 = 1,116.93/x
  3. Step 3: Cross multiply
    2,211.78x = 3,314.70 × 1,116.93
  4. Step 4: Simplify right side
    2,211.78x = 3,702,287.87
  5. Step 5: Solve for x
    x = 3,702,287.87/2,211.78
  6. Step 6: Final answer
    x = 1,673.90

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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.