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Finding the Fourth Proportional to 1,892.35, 2,838.66 and 659.62

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Solution

The fourth proportional to 1,892.35, 2,838.66 and 659.62 is: 989.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,892.35 : 2,838.66 = 659.62 : x
  2. Step 2: Convert to fraction form
    1,892.35/2,838.66 = 659.62/x
  3. Step 3: Cross multiply
    1,892.35x = 2,838.66 × 659.62
  4. Step 4: Simplify right side
    1,892.35x = 1,872,436.91
  5. Step 5: Solve for x
    x = 1,872,436.91/1,892.35
  6. Step 6: Final answer
    x = 989.48

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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.