Home / 1,212.91-1,819.37-482.49

Finding the Fourth Proportional to 1,212.91, 1,819.37 and 482.49

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Solution

The fourth proportional to 1,212.91, 1,819.37 and 482.49 is: 723.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212.91 : 1,819.37 = 482.49 : x
  2. Step 2: Convert to fraction form
    1,212.91/1,819.37 = 482.49/x
  3. Step 3: Cross multiply
    1,212.91x = 1,819.37 × 482.49
  4. Step 4: Simplify right side
    1,212.91x = 877,829.04
  5. Step 5: Solve for x
    x = 877,829.04/1,212.91
  6. Step 6: Final answer
    x = 723.74

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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.