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Finding the Fourth Proportional to 8,006.38, 12,009.48 and 3,620.80

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Solution

The fourth proportional to 8,006.38, 12,009.48 and 3,620.80 is: 5,431.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,006.38 : 12,009.48 = 3,620.80 : x
  2. Step 2: Convert to fraction form
    8,006.38/12,009.48 = 3,620.80/x
  3. Step 3: Cross multiply
    8,006.38x = 12,009.48 × 3,620.80
  4. Step 4: Simplify right side
    8,006.38x = 43,483,925.18
  5. Step 5: Solve for x
    x = 43,483,925.18/8,006.38
  6. Step 6: Final answer
    x = 5,431.16

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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.