Home / 8,587.32-12,879.45-3,906.23

Finding the Fourth Proportional to 8,587.32, 12,879.45 and 3,906.23

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Solution

The fourth proportional to 8,587.32, 12,879.45 and 3,906.23 is: 5,858.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.32 : 12,879.45 = 3,906.23 : x
  2. Step 2: Convert to fraction form
    8,587.32/12,879.45 = 3,906.23/x
  3. Step 3: Cross multiply
    8,587.32x = 12,879.45 × 3,906.23
  4. Step 4: Simplify right side
    8,587.32x = 50,310,029.58
  5. Step 5: Solve for x
    x = 50,310,029.58/8,587.32
  6. Step 6: Final answer
    x = 5,858.64

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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.