Home / 2,212.45-3,053.19-1,217.77

Finding the Fourth Proportional to 2,212.45, 3,053.19 and 1,217.77

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Solution

The fourth proportional to 2,212.45, 3,053.19 and 1,217.77 is: 1,680.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.45 : 3,053.19 = 1,217.77 : x
  2. Step 2: Convert to fraction form
    2,212.45/3,053.19 = 1,217.77/x
  3. Step 3: Cross multiply
    2,212.45x = 3,053.19 × 1,217.77
  4. Step 4: Simplify right side
    2,212.45x = 3,718,080.12
  5. Step 5: Solve for x
    x = 3,718,080.12/2,212.45
  6. Step 6: Final answer
    x = 1,680.53

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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.