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Finding the Fourth Proportional to 8,449.86, 11,660.88 and 4,723.86

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Solution

The fourth proportional to 8,449.86, 11,660.88 and 4,723.86 is: 6,518.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,449.86 : 11,660.88 = 4,723.86 : x
  2. Step 2: Convert to fraction form
    8,449.86/11,660.88 = 4,723.86/x
  3. Step 3: Cross multiply
    8,449.86x = 11,660.88 × 4,723.86
  4. Step 4: Simplify right side
    8,449.86x = 55,084,364.60
  5. Step 5: Solve for x
    x = 55,084,364.60/8,449.86
  6. Step 6: Final answer
    x = 6,518.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.