Home / 3,655.20-5,481.62-1,189.42

Finding the Fourth Proportional to 3,655.20, 5,481.62 and 1,189.42

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Solution

The fourth proportional to 3,655.20, 5,481.62 and 1,189.42 is: 1,783.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,655.20 : 5,481.62 = 1,189.42 : x
  2. Step 2: Convert to fraction form
    3,655.20/5,481.62 = 1,189.42/x
  3. Step 3: Cross multiply
    3,655.20x = 5,481.62 × 1,189.42
  4. Step 4: Simplify right side
    3,655.20x = 6,519,948.46
  5. Step 5: Solve for x
    x = 6,519,948.46/3,655.20
  6. Step 6: Final answer
    x = 1,783.75

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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.