Home / 2,211.87-3,052.31-1,217.15

Finding the Fourth Proportional to 2,211.87, 3,052.31 and 1,217.15

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Solution

The fourth proportional to 2,211.87, 3,052.31 and 1,217.15 is: 1,679.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.87 : 3,052.31 = 1,217.15 : x
  2. Step 2: Convert to fraction form
    2,211.87/3,052.31 = 1,217.15/x
  3. Step 3: Cross multiply
    2,211.87x = 3,052.31 × 1,217.15
  4. Step 4: Simplify right side
    2,211.87x = 3,715,106.90
  5. Step 5: Solve for x
    x = 3,715,106.90/2,211.87
  6. Step 6: Final answer
    x = 1,679.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.