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Finding the Fourth Proportional to 3,945.92, 5,918.88 and 1,348.88

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Solution

The fourth proportional to 3,945.92, 5,918.88 and 1,348.88 is: 2,023.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.92 : 5,918.88 = 1,348.88 : x
  2. Step 2: Convert to fraction form
    3,945.92/5,918.88 = 1,348.88/x
  3. Step 3: Cross multiply
    3,945.92x = 5,918.88 × 1,348.88
  4. Step 4: Simplify right side
    3,945.92x = 7,983,858.85
  5. Step 5: Solve for x
    x = 7,983,858.85/3,945.92
  6. Step 6: Final answer
    x = 2,023.32

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Similar ratio
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1.5x scale

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.