Home / 2,189.94-3,014.46-1,909.68

Finding the Fourth Proportional to 2,189.94, 3,014.46 and 1,909.68

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Solution

The fourth proportional to 2,189.94, 3,014.46 and 1,909.68 is: 2,628.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.94 : 3,014.46 = 1,909.68 : x
  2. Step 2: Convert to fraction form
    2,189.94/3,014.46 = 1,909.68/x
  3. Step 3: Cross multiply
    2,189.94x = 3,014.46 × 1,909.68
  4. Step 4: Simplify right side
    2,189.94x = 5,756,653.97
  5. Step 5: Solve for x
    x = 5,756,653.97/2,189.94
  6. Step 6: Final answer
    x = 2,628.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.