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Finding the Fourth Proportional to 2,011.75, 2,776.22 and 1,173.03

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Solution

The fourth proportional to 2,011.75, 2,776.22 and 1,173.03 is: 1,618.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.75 : 2,776.22 = 1,173.03 : x
  2. Step 2: Convert to fraction form
    2,011.75/2,776.22 = 1,173.03/x
  3. Step 3: Cross multiply
    2,011.75x = 2,776.22 × 1,173.03
  4. Step 4: Simplify right side
    2,011.75x = 3,256,589.35
  5. Step 5: Solve for x
    x = 3,256,589.35/2,011.75
  6. Step 6: Final answer
    x = 1,618.78

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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.