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Finding the Fourth Proportional to 8,438.15, 12,650.02 and 5,965.19

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Solution

The fourth proportional to 8,438.15, 12,650.02 and 5,965.19 is: 8,942.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.15 : 12,650.02 = 5,965.19 : x
  2. Step 2: Convert to fraction form
    8,438.15/12,650.02 = 5,965.19/x
  3. Step 3: Cross multiply
    8,438.15x = 12,650.02 × 5,965.19
  4. Step 4: Simplify right side
    8,438.15x = 75,459,772.80
  5. Step 5: Solve for x
    x = 75,459,772.80/8,438.15
  6. Step 6: Final answer
    x = 8,942.69

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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.