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Finding the Fourth Proportional to 8,000.72, 11,994.60 and 3,615.92

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Solution

The fourth proportional to 8,000.72, 11,994.60 and 3,615.92 is: 5,420.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,000.72 : 11,994.60 = 3,615.92 : x
  2. Step 2: Convert to fraction form
    8,000.72/11,994.60 = 3,615.92/x
  3. Step 3: Cross multiply
    8,000.72x = 11,994.60 × 3,615.92
  4. Step 4: Simplify right side
    8,000.72x = 43,371,514.03
  5. Step 5: Solve for x
    x = 43,371,514.03/8,000.72
  6. Step 6: Final answer
    x = 5,420.95

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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.