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Finding the Fourth Proportional to 2,621.76, 3,932.88 and 673.97

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Solution

The fourth proportional to 2,621.76, 3,932.88 and 673.97 is: 1,011.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.76 : 3,932.88 = 673.97 : x
  2. Step 2: Convert to fraction form
    2,621.76/3,932.88 = 673.97/x
  3. Step 3: Cross multiply
    2,621.76x = 3,932.88 × 673.97
  4. Step 4: Simplify right side
    2,621.76x = 2,650,623.47
  5. Step 5: Solve for x
    x = 2,650,623.47/2,621.76
  6. Step 6: Final answer
    x = 1,011.01

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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.