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Finding the Fourth Proportional to 1,793.84, 2,688.32 and 817.79

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Solution

The fourth proportional to 1,793.84, 2,688.32 and 817.79 is: 1,225.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,793.84 : 2,688.32 = 817.79 : x
  2. Step 2: Convert to fraction form
    1,793.84/2,688.32 = 817.79/x
  3. Step 3: Cross multiply
    1,793.84x = 2,688.32 × 817.79
  4. Step 4: Simplify right side
    1,793.84x = 2,198,463.68
  5. Step 5: Solve for x
    x = 2,198,463.68/1,793.84
  6. Step 6: Final answer
    x = 1,225.57

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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.