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Finding the Fourth Proportional to 5,912.80, 8,856.24 and 4,940.80

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Solution

The fourth proportional to 5,912.80, 8,856.24 and 4,940.80 is: 7,400.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,912.80 : 8,856.24 = 4,940.80 : x
  2. Step 2: Convert to fraction form
    5,912.80/8,856.24 = 4,940.80/x
  3. Step 3: Cross multiply
    5,912.80x = 8,856.24 × 4,940.80
  4. Step 4: Simplify right side
    5,912.80x = 43,756,910.59
  5. Step 5: Solve for x
    x = 43,756,910.59/5,912.80
  6. Step 6: Final answer
    x = 7,400.37

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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.