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Finding the Fourth Proportional to 5,493.71, 7,581.15 and 3,103.79

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Solution

The fourth proportional to 5,493.71, 7,581.15 and 3,103.79 is: 4,283.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,493.71 : 7,581.15 = 3,103.79 : x
  2. Step 2: Convert to fraction form
    5,493.71/7,581.15 = 3,103.79/x
  3. Step 3: Cross multiply
    5,493.71x = 7,581.15 × 3,103.79
  4. Step 4: Simplify right side
    5,493.71x = 23,530,259.65
  5. Step 5: Solve for x
    x = 23,530,259.65/5,493.71
  6. Step 6: Final answer
    x = 4,283.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.