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Finding the Fourth Proportional to 1,661.58, 2,489.49 and 1,601.10

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Solution

The fourth proportional to 1,661.58, 2,489.49 and 1,601.10 is: 2,398.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.58 : 2,489.49 = 1,601.10 : x
  2. Step 2: Convert to fraction form
    1,661.58/2,489.49 = 1,601.10/x
  3. Step 3: Cross multiply
    1,661.58x = 2,489.49 × 1,601.10
  4. Step 4: Simplify right side
    1,661.58x = 3,985,922.44
  5. Step 5: Solve for x
    x = 3,985,922.44/1,661.58
  6. Step 6: Final answer
    x = 2,398.87

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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.