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Finding the Fourth Proportional to 8,416.08, 12,628.79 and 7,189.08

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Solution

The fourth proportional to 8,416.08, 12,628.79 and 7,189.08 is: 10,787.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,416.08 : 12,628.79 = 7,189.08 : x
  2. Step 2: Convert to fraction form
    8,416.08/12,628.79 = 7,189.08/x
  3. Step 3: Cross multiply
    8,416.08x = 12,628.79 × 7,189.08
  4. Step 4: Simplify right side
    8,416.08x = 90,789,340.57
  5. Step 5: Solve for x
    x = 90,789,340.57/8,416.08
  6. Step 6: Final answer
    x = 10,787.61

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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.