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Finding the Fourth Proportional to 8,003.90, 11,992.88 and 4,880.54

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Solution

The fourth proportional to 8,003.90, 11,992.88 and 4,880.54 is: 7,312.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,003.90 : 11,992.88 = 4,880.54 : x
  2. Step 2: Convert to fraction form
    8,003.90/11,992.88 = 4,880.54/x
  3. Step 3: Cross multiply
    8,003.90x = 11,992.88 × 4,880.54
  4. Step 4: Simplify right side
    8,003.90x = 58,531,730.56
  5. Step 5: Solve for x
    x = 58,531,730.56/8,003.90
  6. Step 6: Final answer
    x = 7,312.90

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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.