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Finding the Fourth Proportional to 1,887.45, 2,830.26 and 791.52

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Solution

The fourth proportional to 1,887.45, 2,830.26 and 791.52 is: 1,186.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,887.45 : 2,830.26 = 791.52 : x
  2. Step 2: Convert to fraction form
    1,887.45/2,830.26 = 791.52/x
  3. Step 3: Cross multiply
    1,887.45x = 2,830.26 × 791.52
  4. Step 4: Simplify right side
    1,887.45x = 2,240,198.34
  5. Step 5: Solve for x
    x = 2,240,198.34/1,887.45
  6. Step 6: Final answer
    x = 1,186.89

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.