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Finding the Fourth Proportional to 8,707.68, 13,054.82 and 4,321.73

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Solution

The fourth proportional to 8,707.68, 13,054.82 and 4,321.73 is: 6,479.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.68 : 13,054.82 = 4,321.73 : x
  2. Step 2: Convert to fraction form
    8,707.68/13,054.82 = 4,321.73/x
  3. Step 3: Cross multiply
    8,707.68x = 13,054.82 × 4,321.73
  4. Step 4: Simplify right side
    8,707.68x = 56,419,385.63
  5. Step 5: Solve for x
    x = 56,419,385.63/8,707.68
  6. Step 6: Final answer
    x = 6,479.27

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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.