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Finding the Fourth Proportional to 11,119.98, 16,679.99 and 2,800

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Solution

The fourth proportional to 11,119.98, 16,679.99 and 2,800 is: 4,200.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,119.98 : 16,679.99 = 2,800 : x
  2. Step 2: Convert to fraction form
    11,119.98/16,679.99 = 2,800/x
  3. Step 3: Cross multiply
    11,119.98x = 16,679.99 × 2,800
  4. Step 4: Simplify right side
    11,119.98x = 46,703,972.00
  5. Step 5: Solve for x
    x = 46,703,972.00/11,119.98
  6. Step 6: Final answer
    x = 4,200.00

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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.