Home / 2,212.70-3,053.69-1,218.02

Finding the Fourth Proportional to 2,212.70, 3,053.69 and 1,218.02

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Solution

The fourth proportional to 2,212.70, 3,053.69 and 1,218.02 is: 1,680.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.70 : 3,053.69 = 1,218.02 : x
  2. Step 2: Convert to fraction form
    2,212.70/3,053.69 = 1,218.02/x
  3. Step 3: Cross multiply
    2,212.70x = 3,053.69 × 1,218.02
  4. Step 4: Simplify right side
    2,212.70x = 3,719,434.14
  5. Step 5: Solve for x
    x = 3,719,434.14/2,212.70
  6. Step 6: Final answer
    x = 1,680.95

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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.