Home / 2,217.70-3,326.55-2,109.70

Finding the Fourth Proportional to 2,217.70, 3,326.55 and 2,109.70

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Solution

The fourth proportional to 2,217.70, 3,326.55 and 2,109.70 is: 3,164.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.70 : 3,326.55 = 2,109.70 : x
  2. Step 2: Convert to fraction form
    2,217.70/3,326.55 = 2,109.70/x
  3. Step 3: Cross multiply
    2,217.70x = 3,326.55 × 2,109.70
  4. Step 4: Simplify right side
    2,217.70x = 7,018,022.54
  5. Step 5: Solve for x
    x = 7,018,022.54/2,217.70
  6. Step 6: Final answer
    x = 3,164.55

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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.