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Finding the Fourth Proportional to 8,621.10, 12,908.97 and 6,674.94

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Solution

The fourth proportional to 8,621.10, 12,908.97 and 6,674.94 is: 9,994.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.10 : 12,908.97 = 6,674.94 : x
  2. Step 2: Convert to fraction form
    8,621.10/12,908.97 = 6,674.94/x
  3. Step 3: Cross multiply
    8,621.10x = 12,908.97 × 6,674.94
  4. Step 4: Simplify right side
    8,621.10x = 86,166,600.21
  5. Step 5: Solve for x
    x = 86,166,600.21/8,621.10
  6. Step 6: Final answer
    x = 9,994.85

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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.