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Finding the Fourth Proportional to 8,448.48, 12,649.92 and 7,928.96

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Solution

The fourth proportional to 8,448.48, 12,649.92 and 7,928.96 is: 11,872.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,448.48 : 12,649.92 = 7,928.96 : x
  2. Step 2: Convert to fraction form
    8,448.48/12,649.92 = 7,928.96/x
  3. Step 3: Cross multiply
    8,448.48x = 12,649.92 × 7,928.96
  4. Step 4: Simplify right side
    8,448.48x = 100,300,709.68
  5. Step 5: Solve for x
    x = 100,300,709.68/8,448.48
  6. Step 6: Final answer
    x = 11,872.04

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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.