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Finding the Fourth Proportional to 8,638.92, 12,950.67 and 3,372.71

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Solution

The fourth proportional to 8,638.92, 12,950.67 and 3,372.71 is: 5,056.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638.92 : 12,950.67 = 3,372.71 : x
  2. Step 2: Convert to fraction form
    8,638.92/12,950.67 = 3,372.71/x
  3. Step 3: Cross multiply
    8,638.92x = 12,950.67 × 3,372.71
  4. Step 4: Simplify right side
    8,638.92x = 43,678,838.03
  5. Step 5: Solve for x
    x = 43,678,838.03/8,638.92
  6. Step 6: Final answer
    x = 5,056.05

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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.