Home / 8,138.38-12,199.34-3,206.10

Finding the Fourth Proportional to 8,138.38, 12,199.34 and 3,206.10

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Solution

The fourth proportional to 8,138.38, 12,199.34 and 3,206.10 is: 4,805.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.38 : 12,199.34 = 3,206.10 : x
  2. Step 2: Convert to fraction form
    8,138.38/12,199.34 = 3,206.10/x
  3. Step 3: Cross multiply
    8,138.38x = 12,199.34 × 3,206.10
  4. Step 4: Simplify right side
    8,138.38x = 39,112,303.97
  5. Step 5: Solve for x
    x = 39,112,303.97/8,138.38
  6. Step 6: Final answer
    x = 4,805.91

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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.