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Finding the Fourth Proportional to 2,891.79, 4,337.69 and 1,659.98

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Solution

The fourth proportional to 2,891.79, 4,337.69 and 1,659.98 is: 2,489.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.79 : 4,337.69 = 1,659.98 : x
  2. Step 2: Convert to fraction form
    2,891.79/4,337.69 = 1,659.98/x
  3. Step 3: Cross multiply
    2,891.79x = 4,337.69 × 1,659.98
  4. Step 4: Simplify right side
    2,891.79x = 7,200,481.19
  5. Step 5: Solve for x
    x = 7,200,481.19/2,891.79
  6. Step 6: Final answer
    x = 2,489.97

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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.