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Finding the Fourth Proportional to 4,990.84, 7,472.86 and 2,793.31

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Solution

The fourth proportional to 4,990.84, 7,472.86 and 2,793.31 is: 4,182.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.84 : 7,472.86 = 2,793.31 : x
  2. Step 2: Convert to fraction form
    4,990.84/7,472.86 = 2,793.31/x
  3. Step 3: Cross multiply
    4,990.84x = 7,472.86 × 2,793.31
  4. Step 4: Simplify right side
    4,990.84x = 20,874,014.57
  5. Step 5: Solve for x
    x = 20,874,014.57/4,990.84
  6. Step 6: Final answer
    x = 4,182.47

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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.