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Finding the Fourth Proportional to 4,979.43, 7,469.15 and 1,859.31

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Solution

The fourth proportional to 4,979.43, 7,469.15 and 1,859.31 is: 2,788.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.43 : 7,469.15 = 1,859.31 : x
  2. Step 2: Convert to fraction form
    4,979.43/7,469.15 = 1,859.31/x
  3. Step 3: Cross multiply
    4,979.43x = 7,469.15 × 1,859.31
  4. Step 4: Simplify right side
    4,979.43x = 13,887,455.99
  5. Step 5: Solve for x
    x = 13,887,455.99/4,979.43
  6. Step 6: Final answer
    x = 2,788.97

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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.