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Finding the Fourth Proportional to 8,521.96, 12,778.08 and 3,325

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Solution

The fourth proportional to 8,521.96, 12,778.08 and 3,325 is: 4,985.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.96 : 12,778.08 = 3,325 : x
  2. Step 2: Convert to fraction form
    8,521.96/12,778.08 = 3,325/x
  3. Step 3: Cross multiply
    8,521.96x = 12,778.08 × 3,325
  4. Step 4: Simplify right side
    8,521.96x = 42,487,116
  5. Step 5: Solve for x
    x = 42,487,116/8,521.96
  6. Step 6: Final answer
    x = 4,985.60

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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.