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Finding the Fourth Proportional to 8,657.55, 12,984.30 and 3,392.75

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Solution

The fourth proportional to 8,657.55, 12,984.30 and 3,392.75 is: 5,088.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,657.55 : 12,984.30 = 3,392.75 : x
  2. Step 2: Convert to fraction form
    8,657.55/12,984.30 = 3,392.75/x
  3. Step 3: Cross multiply
    8,657.55x = 12,984.30 × 3,392.75
  4. Step 4: Simplify right side
    8,657.55x = 44,052,516.29
  5. Step 5: Solve for x
    x = 44,052,516.29/8,657.55
  6. Step 6: Final answer
    x = 5,088.34

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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.