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Finding the Fourth Proportional to 4,679.42, 7,022.22 and 2,489.72

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Solution

The fourth proportional to 4,679.42, 7,022.22 and 2,489.72 is: 3,736.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.42 : 7,022.22 = 2,489.72 : x
  2. Step 2: Convert to fraction form
    4,679.42/7,022.22 = 2,489.72/x
  3. Step 3: Cross multiply
    4,679.42x = 7,022.22 × 2,489.72
  4. Step 4: Simplify right side
    4,679.42x = 17,483,361.58
  5. Step 5: Solve for x
    x = 17,483,361.58/4,679.42
  6. Step 6: Final answer
    x = 3,736.22

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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.