Home / 8,069.95-12,102.57-3,138.42

Finding the Fourth Proportional to 8,069.95, 12,102.57 and 3,138.42

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Solution

The fourth proportional to 8,069.95, 12,102.57 and 3,138.42 is: 4,706.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,069.95 : 12,102.57 = 3,138.42 : x
  2. Step 2: Convert to fraction form
    8,069.95/12,102.57 = 3,138.42/x
  3. Step 3: Cross multiply
    8,069.95x = 12,102.57 × 3,138.42
  4. Step 4: Simplify right side
    8,069.95x = 37,982,902.35
  5. Step 5: Solve for x
    x = 37,982,902.35/8,069.95
  6. Step 6: Final answer
    x = 4,706.71

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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.