Home / 7,859.20-11,845.34-6,776.64

Finding the Fourth Proportional to 7,859.20, 11,845.34 and 6,776.64

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Solution

The fourth proportional to 7,859.20, 11,845.34 and 6,776.64 is: 10,213.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,859.20 : 11,845.34 = 6,776.64 : x
  2. Step 2: Convert to fraction form
    7,859.20/11,845.34 = 6,776.64/x
  3. Step 3: Cross multiply
    7,859.20x = 11,845.34 × 6,776.64
  4. Step 4: Simplify right side
    7,859.20x = 80,271,604.86
  5. Step 5: Solve for x
    x = 80,271,604.86/7,859.20
  6. Step 6: Final answer
    x = 10,213.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.