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Finding the Fourth Proportional to 2,141.89, 3,212.84 and 754.89

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Solution

The fourth proportional to 2,141.89, 3,212.84 and 754.89 is: 1,132.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,141.89 : 3,212.84 = 754.89 : x
  2. Step 2: Convert to fraction form
    2,141.89/3,212.84 = 754.89/x
  3. Step 3: Cross multiply
    2,141.89x = 3,212.84 × 754.89
  4. Step 4: Simplify right side
    2,141.89x = 2,425,355.61
  5. Step 5: Solve for x
    x = 2,425,355.61/2,141.89
  6. Step 6: Final answer
    x = 1,132.34

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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.