Home / 8,638.15-12,957.23-2,399.73

Finding the Fourth Proportional to 8,638.15, 12,957.23 and 2,399.73

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Solution

The fourth proportional to 8,638.15, 12,957.23 and 2,399.73 is: 3,599.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638.15 : 12,957.23 = 2,399.73 : x
  2. Step 2: Convert to fraction form
    8,638.15/12,957.23 = 2,399.73/x
  3. Step 3: Cross multiply
    8,638.15x = 12,957.23 × 2,399.73
  4. Step 4: Simplify right side
    8,638.15x = 31,093,853.55
  5. Step 5: Solve for x
    x = 31,093,853.55/8,638.15
  6. Step 6: Final answer
    x = 3,599.60

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Similar ratio
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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.