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Finding the Fourth Proportional to 3,988.73, 5,504.63 and 3,324.47

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Solution

The fourth proportional to 3,988.73, 5,504.63 and 3,324.47 is: 4,587.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.73 : 5,504.63 = 3,324.47 : x
  2. Step 2: Convert to fraction form
    3,988.73/5,504.63 = 3,324.47/x
  3. Step 3: Cross multiply
    3,988.73x = 5,504.63 × 3,324.47
  4. Step 4: Simplify right side
    3,988.73x = 18,299,977.30
  5. Step 5: Solve for x
    x = 18,299,977.30/3,988.73
  6. Step 6: Final answer
    x = 4,587.92

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1.5x scale

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.