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Finding the Fourth Proportional to 7,734, 11,600.84 and 2,187.28

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Solution

The fourth proportional to 7,734, 11,600.84 and 2,187.28 is: 3,280.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,734 : 11,600.84 = 2,187.28 : x
  2. Step 2: Convert to fraction form
    7,734/11,600.84 = 2,187.28/x
  3. Step 3: Cross multiply
    7,734x = 11,600.84 × 2,187.28
  4. Step 4: Simplify right side
    7,734x = 25,374,285.32
  5. Step 5: Solve for x
    x = 25,374,285.32/7,734
  6. Step 6: Final answer
    x = 3,280.87

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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.