Home / 2,212.52-3,315.68-1,225.79

Finding the Fourth Proportional to 2,212.52, 3,315.68 and 1,225.79

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Solution

The fourth proportional to 2,212.52, 3,315.68 and 1,225.79 is: 1,836.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.52 : 3,315.68 = 1,225.79 : x
  2. Step 2: Convert to fraction form
    2,212.52/3,315.68 = 1,225.79/x
  3. Step 3: Cross multiply
    2,212.52x = 3,315.68 × 1,225.79
  4. Step 4: Simplify right side
    2,212.52x = 4,064,338.74
  5. Step 5: Solve for x
    x = 4,064,338.74/2,212.52
  6. Step 6: Final answer
    x = 1,836.97

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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.