Home / 7,994.32-11,989.88-2,151

Finding the Fourth Proportional to 7,994.32, 11,989.88 and 2,151

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Solution

The fourth proportional to 7,994.32, 11,989.88 and 2,151 is: 3,226.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,994.32 : 11,989.88 = 2,151 : x
  2. Step 2: Convert to fraction form
    7,994.32/11,989.88 = 2,151/x
  3. Step 3: Cross multiply
    7,994.32x = 11,989.88 × 2,151
  4. Step 4: Simplify right side
    7,994.32x = 25,790,231.88
  5. Step 5: Solve for x
    x = 25,790,231.88/7,994.32
  6. Step 6: Final answer
    x = 3,226.07

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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.