Home / 3,945.60-5,918.40-3,433.60

Finding the Fourth Proportional to 3,945.60, 5,918.40 and 3,433.60

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Solution

The fourth proportional to 3,945.60, 5,918.40 and 3,433.60 is: 5,150.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.60 : 5,918.40 = 3,433.60 : x
  2. Step 2: Convert to fraction form
    3,945.60/5,918.40 = 3,433.60/x
  3. Step 3: Cross multiply
    3,945.60x = 5,918.40 × 3,433.60
  4. Step 4: Simplify right side
    3,945.60x = 20,321,418.24
  5. Step 5: Solve for x
    x = 20,321,418.24/3,945.60
  6. Step 6: Final answer
    x = 5,150.40

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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.