Home / 7,994.21-11,990.80-2,447.02

Finding the Fourth Proportional to 7,994.21, 11,990.80 and 2,447.02

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Solution

The fourth proportional to 7,994.21, 11,990.80 and 2,447.02 is: 3,670.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,994.21 : 11,990.80 = 2,447.02 : x
  2. Step 2: Convert to fraction form
    7,994.21/11,990.80 = 2,447.02/x
  3. Step 3: Cross multiply
    7,994.21x = 11,990.80 × 2,447.02
  4. Step 4: Simplify right side
    7,994.21x = 29,341,745.46
  5. Step 5: Solve for x
    x = 29,341,745.46/7,994.21
  6. Step 6: Final answer
    x = 3,670.38

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Double scale
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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.