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Finding the Fourth Proportional to 8,324.70, 12,474.72 and 3,640.42

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Solution

The fourth proportional to 8,324.70, 12,474.72 and 3,640.42 is: 5,455.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,324.70 : 12,474.72 = 3,640.42 : x
  2. Step 2: Convert to fraction form
    8,324.70/12,474.72 = 3,640.42/x
  3. Step 3: Cross multiply
    8,324.70x = 12,474.72 × 3,640.42
  4. Step 4: Simplify right side
    8,324.70x = 45,413,220.18
  5. Step 5: Solve for x
    x = 45,413,220.18/8,324.70
  6. Step 6: Final answer
    x = 5,455.24

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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.