Home / 3,611.90-4,981.09-2,772.64

Finding the Fourth Proportional to 3,611.90, 4,981.09 and 2,772.64

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Solution

The fourth proportional to 3,611.90, 4,981.09 and 2,772.64 is: 3,823.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.90 : 4,981.09 = 2,772.64 : x
  2. Step 2: Convert to fraction form
    3,611.90/4,981.09 = 2,772.64/x
  3. Step 3: Cross multiply
    3,611.90x = 4,981.09 × 2,772.64
  4. Step 4: Simplify right side
    3,611.90x = 13,810,769.38
  5. Step 5: Solve for x
    x = 13,810,769.38/3,611.90
  6. Step 6: Final answer
    x = 3,823.68

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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.