Home / 7,989.99-11,984.98-2,146.60

Finding the Fourth Proportional to 7,989.99, 11,984.98 and 2,146.60

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Solution

The fourth proportional to 7,989.99, 11,984.98 and 2,146.60 is: 3,219.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.99 : 11,984.98 = 2,146.60 : x
  2. Step 2: Convert to fraction form
    7,989.99/11,984.98 = 2,146.60/x
  3. Step 3: Cross multiply
    7,989.99x = 11,984.98 × 2,146.60
  4. Step 4: Simplify right side
    7,989.99x = 25,726,945.21
  5. Step 5: Solve for x
    x = 25,726,945.21/7,989.99
  6. Step 6: Final answer
    x = 3,219.90

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Similar ratio
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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.