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Finding the Fourth Proportional to 2,486.72, 3,721.80 and 1,704.80

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Solution

The fourth proportional to 2,486.72, 3,721.80 and 1,704.80 is: 2,551.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.72 : 3,721.80 = 1,704.80 : x
  2. Step 2: Convert to fraction form
    2,486.72/3,721.80 = 1,704.80/x
  3. Step 3: Cross multiply
    2,486.72x = 3,721.80 × 1,704.80
  4. Step 4: Simplify right side
    2,486.72x = 6,344,924.64
  5. Step 5: Solve for x
    x = 6,344,924.64/2,486.72
  6. Step 6: Final answer
    x = 2,551.52

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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.