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Finding the Fourth Proportional to 8,231.55, 12,347.72 and 2,684.88

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Solution

The fourth proportional to 8,231.55, 12,347.72 and 2,684.88 is: 4,027.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,231.55 : 12,347.72 = 2,684.88 : x
  2. Step 2: Convert to fraction form
    8,231.55/12,347.72 = 2,684.88/x
  3. Step 3: Cross multiply
    8,231.55x = 12,347.72 × 2,684.88
  4. Step 4: Simplify right side
    8,231.55x = 33,152,133.05
  5. Step 5: Solve for x
    x = 33,152,133.05/8,231.55
  6. Step 6: Final answer
    x = 4,027.45

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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.