Home / 7,984.45-11,982.17-2,790.32

Finding the Fourth Proportional to 7,984.45, 11,982.17 and 2,790.32

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Solution

The fourth proportional to 7,984.45, 11,982.17 and 2,790.32 is: 4,187.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,984.45 : 11,982.17 = 2,790.32 : x
  2. Step 2: Convert to fraction form
    7,984.45/11,982.17 = 2,790.32/x
  3. Step 3: Cross multiply
    7,984.45x = 11,982.17 × 2,790.32
  4. Step 4: Simplify right side
    7,984.45x = 33,434,074.64
  5. Step 5: Solve for x
    x = 33,434,074.64/7,984.45
  6. Step 6: Final answer
    x = 4,187.40

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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.