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Finding the Fourth Proportional to 7,219.72, 10,829.76 and 2,539.72

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Solution

The fourth proportional to 7,219.72, 10,829.76 and 2,539.72 is: 3,809.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,219.72 : 10,829.76 = 2,539.72 : x
  2. Step 2: Convert to fraction form
    7,219.72/10,829.76 = 2,539.72/x
  3. Step 3: Cross multiply
    7,219.72x = 10,829.76 × 2,539.72
  4. Step 4: Simplify right side
    7,219.72x = 27,504,558.07
  5. Step 5: Solve for x
    x = 27,504,558.07/7,219.72
  6. Step 6: Final answer
    x = 3,809.64

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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.