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Finding the Fourth Proportional to 2,175.67, 3,263.50 and 789.00

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Solution

The fourth proportional to 2,175.67, 3,263.50 and 789.00 is: 1,183.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.67 : 3,263.50 = 789.00 : x
  2. Step 2: Convert to fraction form
    2,175.67/3,263.50 = 789.00/x
  3. Step 3: Cross multiply
    2,175.67x = 3,263.50 × 789.00
  4. Step 4: Simplify right side
    2,175.67x = 2,574,897.21
  5. Step 5: Solve for x
    x = 2,574,897.21/2,175.67
  6. Step 6: Final answer
    x = 1,183.50

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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.