Home / 4,450.30-6,140.55-3,121.90

Finding the Fourth Proportional to 4,450.30, 6,140.55 and 3,121.90

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Solution

The fourth proportional to 4,450.30, 6,140.55 and 3,121.90 is: 4,307.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,450.30 : 6,140.55 = 3,121.90 : x
  2. Step 2: Convert to fraction form
    4,450.30/6,140.55 = 3,121.90/x
  3. Step 3: Cross multiply
    4,450.30x = 6,140.55 × 3,121.90
  4. Step 4: Simplify right side
    4,450.30x = 19,170,183.05
  5. Step 5: Solve for x
    x = 19,170,183.05/4,450.30
  6. Step 6: Final answer
    x = 4,307.62

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1.5x scale

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.