Home / 8,638.20-12,954.87-2,396.70

Finding the Fourth Proportional to 8,638.20, 12,954.87 and 2,396.70

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Solution

The fourth proportional to 8,638.20, 12,954.87 and 2,396.70 is: 3,594.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638.20 : 12,954.87 = 2,396.70 : x
  2. Step 2: Convert to fraction form
    8,638.20/12,954.87 = 2,396.70/x
  3. Step 3: Cross multiply
    8,638.20x = 12,954.87 × 2,396.70
  4. Step 4: Simplify right side
    8,638.20x = 31,048,936.93
  5. Step 5: Solve for x
    x = 31,048,936.93/8,638.20
  6. Step 6: Final answer
    x = 3,594.38

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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.