Home / 7,679.38-11,520.96-2,485.25

Finding the Fourth Proportional to 7,679.38, 11,520.96 and 2,485.25

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Solution

The fourth proportional to 7,679.38, 11,520.96 and 2,485.25 is: 3,728.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.38 : 11,520.96 = 2,485.25 : x
  2. Step 2: Convert to fraction form
    7,679.38/11,520.96 = 2,485.25/x
  3. Step 3: Cross multiply
    7,679.38x = 11,520.96 × 2,485.25
  4. Step 4: Simplify right side
    7,679.38x = 28,632,453.41
  5. Step 5: Solve for x
    x = 28,632,453.41/7,679.38
  6. Step 6: Final answer
    x = 3,728.49

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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.