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Finding the Fourth Proportional to 2,213.12, 3,318.06 and 751.88

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Solution

The fourth proportional to 2,213.12, 3,318.06 and 751.88 is: 1,127.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.12 : 3,318.06 = 751.88 : x
  2. Step 2: Convert to fraction form
    2,213.12/3,318.06 = 751.88/x
  3. Step 3: Cross multiply
    2,213.12x = 3,318.06 × 751.88
  4. Step 4: Simplify right side
    2,213.12x = 2,494,782.95
  5. Step 5: Solve for x
    x = 2,494,782.95/2,213.12
  6. Step 6: Final answer
    x = 1,127.27

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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.