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Finding the Fourth Proportional to 8,812.44, 13,215.78 and 2,968.20

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Solution

The fourth proportional to 8,812.44, 13,215.78 and 2,968.20 is: 4,451.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.44 : 13,215.78 = 2,968.20 : x
  2. Step 2: Convert to fraction form
    8,812.44/13,215.78 = 2,968.20/x
  3. Step 3: Cross multiply
    8,812.44x = 13,215.78 × 2,968.20
  4. Step 4: Simplify right side
    8,812.44x = 39,227,078.20
  5. Step 5: Solve for x
    x = 39,227,078.20/8,812.44
  6. Step 6: Final answer
    x = 4,451.33

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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.