Home / 2,212.13-3,052.78-1,217.51

Finding the Fourth Proportional to 2,212.13, 3,052.78 and 1,217.51

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Solution

The fourth proportional to 2,212.13, 3,052.78 and 1,217.51 is: 1,680.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.13 : 3,052.78 = 1,217.51 : x
  2. Step 2: Convert to fraction form
    2,212.13/3,052.78 = 1,217.51/x
  3. Step 3: Cross multiply
    2,212.13x = 3,052.78 × 1,217.51
  4. Step 4: Simplify right side
    2,212.13x = 3,716,784.09
  5. Step 5: Solve for x
    x = 3,716,784.09/2,212.13
  6. Step 6: Final answer
    x = 1,680.18

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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.