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Finding the Fourth Proportional to 4,659.44, 6,990.56 and 1,372.64

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Solution

The fourth proportional to 4,659.44, 6,990.56 and 1,372.64 is: 2,059.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,659.44 : 6,990.56 = 1,372.64 : x
  2. Step 2: Convert to fraction form
    4,659.44/6,990.56 = 1,372.64/x
  3. Step 3: Cross multiply
    4,659.44x = 6,990.56 × 1,372.64
  4. Step 4: Simplify right side
    4,659.44x = 9,595,522.28
  5. Step 5: Solve for x
    x = 9,595,522.28/4,659.44
  6. Step 6: Final answer
    x = 2,059.37

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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.