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Finding the Fourth Proportional to 3,363.96, 5,043.97 and 1,388.07

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Solution

The fourth proportional to 3,363.96, 5,043.97 and 1,388.07 is: 2,081.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,363.96 : 5,043.97 = 1,388.07 : x
  2. Step 2: Convert to fraction form
    3,363.96/5,043.97 = 1,388.07/x
  3. Step 3: Cross multiply
    3,363.96x = 5,043.97 × 1,388.07
  4. Step 4: Simplify right side
    3,363.96x = 7,001,385.17
  5. Step 5: Solve for x
    x = 7,001,385.17/3,363.96
  6. Step 6: Final answer
    x = 2,081.29

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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.