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Finding the Fourth Proportional to 4,747.98, 7,119 and 1,822.80

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Solution

The fourth proportional to 4,747.98, 7,119 and 1,822.80 is: 2,733.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,747.98 : 7,119 = 1,822.80 : x
  2. Step 2: Convert to fraction form
    4,747.98/7,119 = 1,822.80/x
  3. Step 3: Cross multiply
    4,747.98x = 7,119 × 1,822.80
  4. Step 4: Simplify right side
    4,747.98x = 12,976,513.20
  5. Step 5: Solve for x
    x = 12,976,513.20/4,747.98
  6. Step 6: Final answer
    x = 2,733.06

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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.