Home / 3,378.55-5,067.69-1,187.11

Finding the Fourth Proportional to 3,378.55, 5,067.69 and 1,187.11

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Solution

The fourth proportional to 3,378.55, 5,067.69 and 1,187.11 is: 1,780.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.55 : 5,067.69 = 1,187.11 : x
  2. Step 2: Convert to fraction form
    3,378.55/5,067.69 = 1,187.11/x
  3. Step 3: Cross multiply
    3,378.55x = 5,067.69 × 1,187.11
  4. Step 4: Simplify right side
    3,378.55x = 6,015,905.48
  5. Step 5: Solve for x
    x = 6,015,905.48/3,378.55
  6. Step 6: Final answer
    x = 1,780.62

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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.