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Finding the Fourth Proportional to 2,162.62, 3,243.93 and 928.27

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Solution

The fourth proportional to 2,162.62, 3,243.93 and 928.27 is: 1,392.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,162.62 : 3,243.93 = 928.27 : x
  2. Step 2: Convert to fraction form
    2,162.62/3,243.93 = 928.27/x
  3. Step 3: Cross multiply
    2,162.62x = 3,243.93 × 928.27
  4. Step 4: Simplify right side
    2,162.62x = 3,011,242.90
  5. Step 5: Solve for x
    x = 3,011,242.90/2,162.62
  6. Step 6: Final answer
    x = 1,392.41

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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.