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Finding the Fourth Proportional to 8,002.92, 12,009.78 and 2,808.84

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Solution

The fourth proportional to 8,002.92, 12,009.78 and 2,808.84 is: 4,215.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,002.92 : 12,009.78 = 2,808.84 : x
  2. Step 2: Convert to fraction form
    8,002.92/12,009.78 = 2,808.84/x
  3. Step 3: Cross multiply
    8,002.92x = 12,009.78 × 2,808.84
  4. Step 4: Simplify right side
    8,002.92x = 33,733,550.46
  5. Step 5: Solve for x
    x = 33,733,550.46/8,002.92
  6. Step 6: Final answer
    x = 4,215.16

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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.