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Finding the Fourth Proportional to 8,653.37, 12,975.93 and 4,489.20

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Solution

The fourth proportional to 8,653.37, 12,975.93 and 4,489.20 is: 6,731.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,653.37 : 12,975.93 = 4,489.20 : x
  2. Step 2: Convert to fraction form
    8,653.37/12,975.93 = 4,489.20/x
  3. Step 3: Cross multiply
    8,653.37x = 12,975.93 × 4,489.20
  4. Step 4: Simplify right side
    8,653.37x = 58,251,544.96
  5. Step 5: Solve for x
    x = 58,251,544.96/8,653.37
  6. Step 6: Final answer
    x = 6,731.66

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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.