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Finding the Fourth Proportional to 3,996.60, 5,993.52 and 1,918.95

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Solution

The fourth proportional to 3,996.60, 5,993.52 and 1,918.95 is: 2,877.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.60 : 5,993.52 = 1,918.95 : x
  2. Step 2: Convert to fraction form
    3,996.60/5,993.52 = 1,918.95/x
  3. Step 3: Cross multiply
    3,996.60x = 5,993.52 × 1,918.95
  4. Step 4: Simplify right side
    3,996.60x = 11,501,265.20
  5. Step 5: Solve for x
    x = 11,501,265.20/3,996.60
  6. Step 6: Final answer
    x = 2,877.76

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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.