Home / 7,993.20-11,989.04-2,798.80

Finding the Fourth Proportional to 7,993.20, 11,989.04 and 2,798.80

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Solution

The fourth proportional to 7,993.20, 11,989.04 and 2,798.80 is: 4,197.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,993.20 : 11,989.04 = 2,798.80 : x
  2. Step 2: Convert to fraction form
    7,993.20/11,989.04 = 2,798.80/x
  3. Step 3: Cross multiply
    7,993.20x = 11,989.04 × 2,798.80
  4. Step 4: Simplify right side
    7,993.20x = 33,554,925.15
  5. Step 5: Solve for x
    x = 33,554,925.15/7,993.20
  6. Step 6: Final answer
    x = 4,197.93

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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.