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Finding the Fourth Proportional to 3,985.72, 5,497.03 and 3,537.92

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Solution

The fourth proportional to 3,985.72, 5,497.03 and 3,537.92 is: 4,879.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.72 : 5,497.03 = 3,537.92 : x
  2. Step 2: Convert to fraction form
    3,985.72/5,497.03 = 3,537.92/x
  3. Step 3: Cross multiply
    3,985.72x = 5,497.03 × 3,537.92
  4. Step 4: Simplify right side
    3,985.72x = 19,448,052.38
  5. Step 5: Solve for x
    x = 19,448,052.38/3,985.72
  6. Step 6: Final answer
    x = 4,879.43

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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.