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Finding the Fourth Proportional to 8,007.22, 12,009.90 and 2,164.29

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Solution

The fourth proportional to 8,007.22, 12,009.90 and 2,164.29 is: 3,246.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,007.22 : 12,009.90 = 2,164.29 : x
  2. Step 2: Convert to fraction form
    8,007.22/12,009.90 = 2,164.29/x
  3. Step 3: Cross multiply
    8,007.22x = 12,009.90 × 2,164.29
  4. Step 4: Simplify right side
    8,007.22x = 25,992,869.55
  5. Step 5: Solve for x
    x = 25,992,869.55/8,007.22
  6. Step 6: Final answer
    x = 3,246.18

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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.