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Finding the Fourth Proportional to 4,992.86, 7,476.99 and 3,139.38

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Solution

The fourth proportional to 4,992.86, 7,476.99 and 3,139.38 is: 4,701.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,992.86 : 7,476.99 = 3,139.38 : x
  2. Step 2: Convert to fraction form
    4,992.86/7,476.99 = 3,139.38/x
  3. Step 3: Cross multiply
    4,992.86x = 7,476.99 × 3,139.38
  4. Step 4: Simplify right side
    4,992.86x = 23,473,112.87
  5. Step 5: Solve for x
    x = 23,473,112.87/4,992.86
  6. Step 6: Final answer
    x = 4,701.34

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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.