Home / 2,813.45-4,221.03-1,993.31

Finding the Fourth Proportional to 2,813.45, 4,221.03 and 1,993.31

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Solution

The fourth proportional to 2,813.45, 4,221.03 and 1,993.31 is: 2,990.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.45 : 4,221.03 = 1,993.31 : x
  2. Step 2: Convert to fraction form
    2,813.45/4,221.03 = 1,993.31/x
  3. Step 3: Cross multiply
    2,813.45x = 4,221.03 × 1,993.31
  4. Step 4: Simplify right side
    2,813.45x = 8,413,821.31
  5. Step 5: Solve for x
    x = 8,413,821.31/2,813.45
  6. Step 6: Final answer
    x = 2,990.57

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1.5x scale

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.