Home / 8,438.27-12,647.14-6,351.55

Finding the Fourth Proportional to 8,438.27, 12,647.14 and 6,351.55

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Solution

The fourth proportional to 8,438.27, 12,647.14 and 6,351.55 is: 9,519.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.27 : 12,647.14 = 6,351.55 : x
  2. Step 2: Convert to fraction form
    8,438.27/12,647.14 = 6,351.55/x
  3. Step 3: Cross multiply
    8,438.27x = 12,647.14 × 6,351.55
  4. Step 4: Simplify right side
    8,438.27x = 80,328,894.57
  5. Step 5: Solve for x
    x = 80,328,894.57/8,438.27
  6. Step 6: Final answer
    x = 9,519.60

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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.