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Finding the Fourth Proportional to 2,859.86, 4,292.79 and 1,629.62

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Solution

The fourth proportional to 2,859.86, 4,292.79 and 1,629.62 is: 2,446.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.86 : 4,292.79 = 1,629.62 : x
  2. Step 2: Convert to fraction form
    2,859.86/4,292.79 = 1,629.62/x
  3. Step 3: Cross multiply
    2,859.86x = 4,292.79 × 1,629.62
  4. Step 4: Simplify right side
    2,859.86x = 6,995,616.44
  5. Step 5: Solve for x
    x = 6,995,616.44/2,859.86
  6. Step 6: Final answer
    x = 2,446.14

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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.