Home / 8,079.64-12,109.38-2,879.80

Finding the Fourth Proportional to 8,079.64, 12,109.38 and 2,879.80

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Solution

The fourth proportional to 8,079.64, 12,109.38 and 2,879.80 is: 4,316.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.64 : 12,109.38 = 2,879.80 : x
  2. Step 2: Convert to fraction form
    8,079.64/12,109.38 = 2,879.80/x
  3. Step 3: Cross multiply
    8,079.64x = 12,109.38 × 2,879.80
  4. Step 4: Simplify right side
    8,079.64x = 34,872,592.52
  5. Step 5: Solve for x
    x = 34,872,592.52/8,079.64
  6. Step 6: Final answer
    x = 4,316.11

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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.