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Finding the Fourth Proportional to 3,543, 5,314.50 and 945.88

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Solution

The fourth proportional to 3,543, 5,314.50 and 945.88 is: 1,418.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543 : 5,314.50 = 945.88 : x
  2. Step 2: Convert to fraction form
    3,543/5,314.50 = 945.88/x
  3. Step 3: Cross multiply
    3,543x = 5,314.50 × 945.88
  4. Step 4: Simplify right side
    3,543x = 5,026,879.26
  5. Step 5: Solve for x
    x = 5,026,879.26/3,543
  6. Step 6: Final answer
    x = 1,418.82

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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.