Home / 2,209.74-3,049.55-1,215.15

Finding the Fourth Proportional to 2,209.74, 3,049.55 and 1,215.15

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Solution

The fourth proportional to 2,209.74, 3,049.55 and 1,215.15 is: 1,676.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.74 : 3,049.55 = 1,215.15 : x
  2. Step 2: Convert to fraction form
    2,209.74/3,049.55 = 1,215.15/x
  3. Step 3: Cross multiply
    2,209.74x = 3,049.55 × 1,215.15
  4. Step 4: Simplify right side
    2,209.74x = 3,705,660.68
  5. Step 5: Solve for x
    x = 3,705,660.68/2,209.74
  6. Step 6: Final answer
    x = 1,676.97

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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.