Home / 2,378.35-3,563.08-1,990.85

Finding the Fourth Proportional to 2,378.35, 3,563.08 and 1,990.85

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Solution

The fourth proportional to 2,378.35, 3,563.08 and 1,990.85 is: 2,982.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.35 : 3,563.08 = 1,990.85 : x
  2. Step 2: Convert to fraction form
    2,378.35/3,563.08 = 1,990.85/x
  3. Step 3: Cross multiply
    2,378.35x = 3,563.08 × 1,990.85
  4. Step 4: Simplify right side
    2,378.35x = 7,093,535.03
  5. Step 5: Solve for x
    x = 7,093,535.03/2,378.35
  6. Step 6: Final answer
    x = 2,982.54

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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.