Home / 7,990.74-11,975.01-4,086.90

Finding the Fourth Proportional to 7,990.74, 11,975.01 and 4,086.90

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Solution

The fourth proportional to 7,990.74, 11,975.01 and 4,086.90 is: 6,124.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.74 : 11,975.01 = 4,086.90 : x
  2. Step 2: Convert to fraction form
    7,990.74/11,975.01 = 4,086.90/x
  3. Step 3: Cross multiply
    7,990.74x = 11,975.01 × 4,086.90
  4. Step 4: Simplify right side
    7,990.74x = 48,940,668.37
  5. Step 5: Solve for x
    x = 48,940,668.37/7,990.74
  6. Step 6: Final answer
    x = 6,124.67

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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.