Home / 2,166.38-3,223.63-2,159.09

Finding the Fourth Proportional to 2,166.38, 3,223.63 and 2,159.09

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Solution

The fourth proportional to 2,166.38, 3,223.63 and 2,159.09 is: 3,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.38 : 3,223.63 = 2,159.09 : x
  2. Step 2: Convert to fraction form
    2,166.38/3,223.63 = 2,159.09/x
  3. Step 3: Cross multiply
    2,166.38x = 3,223.63 × 2,159.09
  4. Step 4: Simplify right side
    2,166.38x = 6,960,118.05
  5. Step 5: Solve for x
    x = 6,960,118.05/2,166.38
  6. Step 6: Final answer
    x = 3,212.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.