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Finding the Fourth Proportional to 3,611.74, 4,984.55 and 2,195.12

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Solution

The fourth proportional to 3,611.74, 4,984.55 and 2,195.12 is: 3,029.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.74 : 4,984.55 = 2,195.12 : x
  2. Step 2: Convert to fraction form
    3,611.74/4,984.55 = 2,195.12/x
  3. Step 3: Cross multiply
    3,611.74x = 4,984.55 × 2,195.12
  4. Step 4: Simplify right side
    3,611.74x = 10,941,660.47
  5. Step 5: Solve for x
    x = 10,941,660.47/3,611.74
  6. Step 6: Final answer
    x = 3,029.47

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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.