Home / 8,121.45-12,183.90-2,574.07

Finding the Fourth Proportional to 8,121.45, 12,183.90 and 2,574.07

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Solution

The fourth proportional to 8,121.45, 12,183.90 and 2,574.07 is: 3,861.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.45 : 12,183.90 = 2,574.07 : x
  2. Step 2: Convert to fraction form
    8,121.45/12,183.90 = 2,574.07/x
  3. Step 3: Cross multiply
    8,121.45x = 12,183.90 × 2,574.07
  4. Step 4: Simplify right side
    8,121.45x = 31,362,211.47
  5. Step 5: Solve for x
    x = 31,362,211.47/8,121.45
  6. Step 6: Final answer
    x = 3,861.65

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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.