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Finding the Fourth Proportional to 8,662.05, 12,994.20 and 2,816.67

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Solution

The fourth proportional to 8,662.05, 12,994.20 and 2,816.67 is: 4,225.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662.05 : 12,994.20 = 2,816.67 : x
  2. Step 2: Convert to fraction form
    8,662.05/12,994.20 = 2,816.67/x
  3. Step 3: Cross multiply
    8,662.05x = 12,994.20 × 2,816.67
  4. Step 4: Simplify right side
    8,662.05x = 36,600,373.31
  5. Step 5: Solve for x
    x = 36,600,373.31/8,662.05
  6. Step 6: Final answer
    x = 4,225.37

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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.