Home / 8,105.81-12,158.72-1,949.81

Finding the Fourth Proportional to 8,105.81, 12,158.72 and 1,949.81

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Solution

The fourth proportional to 8,105.81, 12,158.72 and 1,949.81 is: 2,924.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.81 : 12,158.72 = 1,949.81 : x
  2. Step 2: Convert to fraction form
    8,105.81/12,158.72 = 1,949.81/x
  3. Step 3: Cross multiply
    8,105.81x = 12,158.72 × 1,949.81
  4. Step 4: Simplify right side
    8,105.81x = 23,707,229.11
  5. Step 5: Solve for x
    x = 23,707,229.11/8,105.81
  6. Step 6: Final answer
    x = 2,924.72

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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.