Home / 8,309.86-12,464.75-3,378.38

Finding the Fourth Proportional to 8,309.86, 12,464.75 and 3,378.38

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Solution

The fourth proportional to 8,309.86, 12,464.75 and 3,378.38 is: 5,067.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,309.86 : 12,464.75 = 3,378.38 : x
  2. Step 2: Convert to fraction form
    8,309.86/12,464.75 = 3,378.38/x
  3. Step 3: Cross multiply
    8,309.86x = 12,464.75 × 3,378.38
  4. Step 4: Simplify right side
    8,309.86x = 42,110,608.23
  5. Step 5: Solve for x
    x = 42,110,608.23/8,309.86
  6. Step 6: Final answer
    x = 5,067.55

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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.