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Finding the Fourth Proportional to 2,224.12, 3,334.54 and 762.88

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Solution

The fourth proportional to 2,224.12, 3,334.54 and 762.88 is: 1,143.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,224.12 : 3,334.54 = 762.88 : x
  2. Step 2: Convert to fraction form
    2,224.12/3,334.54 = 762.88/x
  3. Step 3: Cross multiply
    2,224.12x = 3,334.54 × 762.88
  4. Step 4: Simplify right side
    2,224.12x = 2,543,853.88
  5. Step 5: Solve for x
    x = 2,543,853.88/2,224.12
  6. Step 6: Final answer
    x = 1,143.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.