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Finding the Fourth Proportional to 2,667.82, 4,001.73 and 720.03

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Solution

The fourth proportional to 2,667.82, 4,001.73 and 720.03 is: 1,080.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,667.82 : 4,001.73 = 720.03 : x
  2. Step 2: Convert to fraction form
    2,667.82/4,001.73 = 720.03/x
  3. Step 3: Cross multiply
    2,667.82x = 4,001.73 × 720.03
  4. Step 4: Simplify right side
    2,667.82x = 2,881,350.27
  5. Step 5: Solve for x
    x = 2,881,350.27/2,667.82
  6. Step 6: Final answer
    x = 1,080.04

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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.