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Finding the Fourth Proportional to 3,215.67, 4,429.69 and 2,742.03

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Solution

The fourth proportional to 3,215.67, 4,429.69 and 2,742.03 is: 3,777.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.67 : 4,429.69 = 2,742.03 : x
  2. Step 2: Convert to fraction form
    3,215.67/4,429.69 = 2,742.03/x
  3. Step 3: Cross multiply
    3,215.67x = 4,429.69 × 2,742.03
  4. Step 4: Simplify right side
    3,215.67x = 12,146,342.87
  5. Step 5: Solve for x
    x = 12,146,342.87/3,215.67
  6. Step 6: Final answer
    x = 3,777.24

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.