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Finding the Fourth Proportional to 8,707.37, 13,054.97 and 4,321.82

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Solution

The fourth proportional to 8,707.37, 13,054.97 and 4,321.82 is: 6,479.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.37 : 13,054.97 = 4,321.82 : x
  2. Step 2: Convert to fraction form
    8,707.37/13,054.97 = 4,321.82/x
  3. Step 3: Cross multiply
    8,707.37x = 13,054.97 × 4,321.82
  4. Step 4: Simplify right side
    8,707.37x = 56,421,273.89
  5. Step 5: Solve for x
    x = 56,421,273.89/8,707.37
  6. Step 6: Final answer
    x = 6,479.72

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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.