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Finding the Fourth Proportional to 8,325.54, 12,480.19 and 6,768.72

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Solution

The fourth proportional to 8,325.54, 12,480.19 and 6,768.72 is: 10,146.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,325.54 : 12,480.19 = 6,768.72 : x
  2. Step 2: Convert to fraction form
    8,325.54/12,480.19 = 6,768.72/x
  3. Step 3: Cross multiply
    8,325.54x = 12,480.19 × 6,768.72
  4. Step 4: Simplify right side
    8,325.54x = 84,474,911.66
  5. Step 5: Solve for x
    x = 84,474,911.66/8,325.54
  6. Step 6: Final answer
    x = 10,146.48

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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.