Home / 3,380.87-5,071.75-1,189.08

Finding the Fourth Proportional to 3,380.87, 5,071.75 and 1,189.08

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Solution

The fourth proportional to 3,380.87, 5,071.75 and 1,189.08 is: 1,783.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.87 : 5,071.75 = 1,189.08 : x
  2. Step 2: Convert to fraction form
    3,380.87/5,071.75 = 1,189.08/x
  3. Step 3: Cross multiply
    3,380.87x = 5,071.75 × 1,189.08
  4. Step 4: Simplify right side
    3,380.87x = 6,030,713.52
  5. Step 5: Solve for x
    x = 6,030,713.52/3,380.87
  6. Step 6: Final answer
    x = 1,783.77

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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.