Home / 8,109.86-12,170.21-2,844.87

Finding the Fourth Proportional to 8,109.86, 12,170.21 and 2,844.87

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Solution

The fourth proportional to 8,109.86, 12,170.21 and 2,844.87 is: 4,269.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.86 : 12,170.21 = 2,844.87 : x
  2. Step 2: Convert to fraction form
    8,109.86/12,170.21 = 2,844.87/x
  3. Step 3: Cross multiply
    8,109.86x = 12,170.21 × 2,844.87
  4. Step 4: Simplify right side
    8,109.86x = 34,622,651.10
  5. Step 5: Solve for x
    x = 34,622,651.10/8,109.86
  6. Step 6: Final answer
    x = 4,269.20

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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.