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Finding the Fourth Proportional to 8,704.70, 12,012.49 and 4,725.81

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Solution

The fourth proportional to 8,704.70, 12,012.49 and 4,725.81 is: 6,521.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,704.70 : 12,012.49 = 4,725.81 : x
  2. Step 2: Convert to fraction form
    8,704.70/12,012.49 = 4,725.81/x
  3. Step 3: Cross multiply
    8,704.70x = 12,012.49 × 4,725.81
  4. Step 4: Simplify right side
    8,704.70x = 56,768,745.37
  5. Step 5: Solve for x
    x = 56,768,745.37/8,704.70
  6. Step 6: Final answer
    x = 6,521.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.