Home / 7,939.76-11,911.44-2,745.68

Finding the Fourth Proportional to 7,939.76, 11,911.44 and 2,745.68

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Solution

The fourth proportional to 7,939.76, 11,911.44 and 2,745.68 is: 4,119.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.76 : 11,911.44 = 2,745.68 : x
  2. Step 2: Convert to fraction form
    7,939.76/11,911.44 = 2,745.68/x
  3. Step 3: Cross multiply
    7,939.76x = 11,911.44 × 2,745.68
  4. Step 4: Simplify right side
    7,939.76x = 32,705,002.58
  5. Step 5: Solve for x
    x = 32,705,002.58/7,939.76
  6. Step 6: Final answer
    x = 4,119.14

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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.