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Finding the Fourth Proportional to 7,187.52, 10,780.98 and 1,993.26

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Solution

The fourth proportional to 7,187.52, 10,780.98 and 1,993.26 is: 2,989.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,187.52 : 10,780.98 = 1,993.26 : x
  2. Step 2: Convert to fraction form
    7,187.52/10,780.98 = 1,993.26/x
  3. Step 3: Cross multiply
    7,187.52x = 10,780.98 × 1,993.26
  4. Step 4: Simplify right side
    7,187.52x = 21,489,296.19
  5. Step 5: Solve for x
    x = 21,489,296.19/7,187.52
  6. Step 6: Final answer
    x = 2,989.81

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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.