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Finding the Fourth Proportional to 7,833.84, 11,748.36 and 2,638.56

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Solution

The fourth proportional to 7,833.84, 11,748.36 and 2,638.56 is: 3,957.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,833.84 : 11,748.36 = 2,638.56 : x
  2. Step 2: Convert to fraction form
    7,833.84/11,748.36 = 2,638.56/x
  3. Step 3: Cross multiply
    7,833.84x = 11,748.36 × 2,638.56
  4. Step 4: Simplify right side
    7,833.84x = 30,998,752.76
  5. Step 5: Solve for x
    x = 30,998,752.76/7,833.84
  6. Step 6: Final answer
    x = 3,957.03

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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.