Home / 7,989.68-11,986.88-4,096.80

Finding the Fourth Proportional to 7,989.68, 11,986.88 and 4,096.80

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Solution

The fourth proportional to 7,989.68, 11,986.88 and 4,096.80 is: 6,146.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.68 : 11,986.88 = 4,096.80 : x
  2. Step 2: Convert to fraction form
    7,989.68/11,986.88 = 4,096.80/x
  3. Step 3: Cross multiply
    7,989.68x = 11,986.88 × 4,096.80
  4. Step 4: Simplify right side
    7,989.68x = 49,107,849.98
  5. Step 5: Solve for x
    x = 49,107,849.98/7,989.68
  6. Step 6: Final answer
    x = 6,146.41

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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.