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Finding the Fourth Proportional to 7,969.03, 11,958.35 and 2,778.55

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Solution

The fourth proportional to 7,969.03, 11,958.35 and 2,778.55 is: 4,169.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,969.03 : 11,958.35 = 2,778.55 : x
  2. Step 2: Convert to fraction form
    7,969.03/11,958.35 = 2,778.55/x
  3. Step 3: Cross multiply
    7,969.03x = 11,958.35 × 2,778.55
  4. Step 4: Simplify right side
    7,969.03x = 33,226,873.39
  5. Step 5: Solve for x
    x = 33,226,873.39/7,969.03
  6. Step 6: Final answer
    x = 4,169.50

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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.