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Finding the Fourth Proportional to 3,611.65, 4,984.65 and 2,195.78

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Solution

The fourth proportional to 3,611.65, 4,984.65 and 2,195.78 is: 3,030.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.65 : 4,984.65 = 2,195.78 : x
  2. Step 2: Convert to fraction form
    3,611.65/4,984.65 = 2,195.78/x
  3. Step 3: Cross multiply
    3,611.65x = 4,984.65 × 2,195.78
  4. Step 4: Simplify right side
    3,611.65x = 10,945,194.78
  5. Step 5: Solve for x
    x = 10,945,194.78/3,611.65
  6. Step 6: Final answer
    x = 3,030.52

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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.