Home / 2,218.05-3,306.96-2,160.34

Finding the Fourth Proportional to 2,218.05, 3,306.96 and 2,160.34

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Solution

The fourth proportional to 2,218.05, 3,306.96 and 2,160.34 is: 3,220.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.05 : 3,306.96 = 2,160.34 : x
  2. Step 2: Convert to fraction form
    2,218.05/3,306.96 = 2,160.34/x
  3. Step 3: Cross multiply
    2,218.05x = 3,306.96 × 2,160.34
  4. Step 4: Simplify right side
    2,218.05x = 7,144,149.70
  5. Step 5: Solve for x
    x = 7,144,149.70/2,218.05
  6. Step 6: Final answer
    x = 3,220.91

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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.