Home / 7,786.43-11,672.47-3,105.32

Finding the Fourth Proportional to 7,786.43, 11,672.47 and 3,105.32

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Solution

The fourth proportional to 7,786.43, 11,672.47 and 3,105.32 is: 4,655.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,786.43 : 11,672.47 = 3,105.32 : x
  2. Step 2: Convert to fraction form
    7,786.43/11,672.47 = 3,105.32/x
  3. Step 3: Cross multiply
    7,786.43x = 11,672.47 × 3,105.32
  4. Step 4: Simplify right side
    7,786.43x = 36,246,765.72
  5. Step 5: Solve for x
    x = 36,246,765.72/7,786.43
  6. Step 6: Final answer
    x = 4,655.12

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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.