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Finding the Fourth Proportional to 1,892.48, 2,837.78 and 659.96

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Solution

The fourth proportional to 1,892.48, 2,837.78 and 659.96 is: 989.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,892.48 : 2,837.78 = 659.96 : x
  2. Step 2: Convert to fraction form
    1,892.48/2,837.78 = 659.96/x
  3. Step 3: Cross multiply
    1,892.48x = 2,837.78 × 659.96
  4. Step 4: Simplify right side
    1,892.48x = 1,872,821.29
  5. Step 5: Solve for x
    x = 1,872,821.29/1,892.48
  6. Step 6: Final answer
    x = 989.61

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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.