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Finding the Fourth Proportional to 8,451.60, 12,678.60 and 2,606.64

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Solution

The fourth proportional to 8,451.60, 12,678.60 and 2,606.64 is: 3,910.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.60 : 12,678.60 = 2,606.64 : x
  2. Step 2: Convert to fraction form
    8,451.60/12,678.60 = 2,606.64/x
  3. Step 3: Cross multiply
    8,451.60x = 12,678.60 × 2,606.64
  4. Step 4: Simplify right side
    8,451.60x = 33,048,545.90
  5. Step 5: Solve for x
    x = 33,048,545.90/8,451.60
  6. Step 6: Final answer
    x = 3,910.33

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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.