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Finding the Fourth Proportional to 8,076.30, 12,114.85 and 4,188.30

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Solution

The fourth proportional to 8,076.30, 12,114.85 and 4,188.30 is: 6,282.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,076.30 : 12,114.85 = 4,188.30 : x
  2. Step 2: Convert to fraction form
    8,076.30/12,114.85 = 4,188.30/x
  3. Step 3: Cross multiply
    8,076.30x = 12,114.85 × 4,188.30
  4. Step 4: Simplify right side
    8,076.30x = 50,740,626.26
  5. Step 5: Solve for x
    x = 50,740,626.26/8,076.30
  6. Step 6: Final answer
    x = 6,282.66

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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.