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Finding the Fourth Proportional to 3,611.93, 4,981.13 and 2,772.67

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Solution

The fourth proportional to 3,611.93, 4,981.13 and 2,772.67 is: 3,823.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.93 : 4,981.13 = 2,772.67 : x
  2. Step 2: Convert to fraction form
    3,611.93/4,981.13 = 2,772.67/x
  3. Step 3: Cross multiply
    3,611.93x = 4,981.13 × 2,772.67
  4. Step 4: Simplify right side
    3,611.93x = 13,811,042.88
  5. Step 5: Solve for x
    x = 13,811,042.88/3,611.93
  6. Step 6: Final answer
    x = 3,823.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.