Home / 7,972.72-11,958.64-2,778.96

Finding the Fourth Proportional to 7,972.72, 11,958.64 and 2,778.96

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Solution

The fourth proportional to 7,972.72, 11,958.64 and 2,778.96 is: 4,168.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.72 : 11,958.64 = 2,778.96 : x
  2. Step 2: Convert to fraction form
    7,972.72/11,958.64 = 2,778.96/x
  3. Step 3: Cross multiply
    7,972.72x = 11,958.64 × 2,778.96
  4. Step 4: Simplify right side
    7,972.72x = 33,232,582.21
  5. Step 5: Solve for x
    x = 33,232,582.21/7,972.72
  6. Step 6: Final answer
    x = 4,168.29

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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.