Home / 2,120.87-3,183.26-1,528.50

Finding the Fourth Proportional to 2,120.87, 3,183.26 and 1,528.50

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Solution

The fourth proportional to 2,120.87, 3,183.26 and 1,528.50 is: 2,294.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.87 : 3,183.26 = 1,528.50 : x
  2. Step 2: Convert to fraction form
    2,120.87/3,183.26 = 1,528.50/x
  3. Step 3: Cross multiply
    2,120.87x = 3,183.26 × 1,528.50
  4. Step 4: Simplify right side
    2,120.87x = 4,865,605.27
  5. Step 5: Solve for x
    x = 4,865,605.27/2,120.87
  6. Step 6: Final answer
    x = 2,294.16

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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.