Home / 8,438.88-12,639.18-6,767.19

Finding the Fourth Proportional to 8,438.88, 12,639.18 and 6,767.19

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Solution

The fourth proportional to 8,438.88, 12,639.18 and 6,767.19 is: 10,135.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.88 : 12,639.18 = 6,767.19 : x
  2. Step 2: Convert to fraction form
    8,438.88/12,639.18 = 6,767.19/x
  3. Step 3: Cross multiply
    8,438.88x = 12,639.18 × 6,767.19
  4. Step 4: Simplify right side
    8,438.88x = 85,531,732.50
  5. Step 5: Solve for x
    x = 85,531,732.50/8,438.88
  6. Step 6: Final answer
    x = 10,135.44

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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.