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Finding the Fourth Proportional to 4,992.73, 7,489.08 and 3,138.23

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Solution

The fourth proportional to 4,992.73, 7,489.08 and 3,138.23 is: 4,707.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,992.73 : 7,489.08 = 3,138.23 : x
  2. Step 2: Convert to fraction form
    4,992.73/7,489.08 = 3,138.23/x
  3. Step 3: Cross multiply
    4,992.73x = 7,489.08 × 3,138.23
  4. Step 4: Simplify right side
    4,992.73x = 23,502,474.25
  5. Step 5: Solve for x
    x = 23,502,474.25/4,992.73
  6. Step 6: Final answer
    x = 4,707.34

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1.5x scale

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.