Home / 2,212.13-3,318.21-2,101.28

Finding the Fourth Proportional to 2,212.13, 3,318.21 and 2,101.28

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Solution

The fourth proportional to 2,212.13, 3,318.21 and 2,101.28 is: 3,151.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.13 : 3,318.21 = 2,101.28 : x
  2. Step 2: Convert to fraction form
    2,212.13/3,318.21 = 2,101.28/x
  3. Step 3: Cross multiply
    2,212.13x = 3,318.21 × 2,101.28
  4. Step 4: Simplify right side
    2,212.13x = 6,972,488.31
  5. Step 5: Solve for x
    x = 6,972,488.31/2,212.13
  6. Step 6: Final answer
    x = 3,151.93

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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.