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Finding the Fourth Proportional to 1,842.97, 2,544.21 and 1,213.90

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Solution

The fourth proportional to 1,842.97, 2,544.21 and 1,213.90 is: 1,675.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,842.97 : 2,544.21 = 1,213.90 : x
  2. Step 2: Convert to fraction form
    1,842.97/2,544.21 = 1,213.90/x
  3. Step 3: Cross multiply
    1,842.97x = 2,544.21 × 1,213.90
  4. Step 4: Simplify right side
    1,842.97x = 3,088,416.52
  5. Step 5: Solve for x
    x = 3,088,416.52/1,842.97
  6. Step 6: Final answer
    x = 1,675.78

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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.