Home / 2,212.99-3,053.92-1,218.28

Finding the Fourth Proportional to 2,212.99, 3,053.92 and 1,218.28

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Solution

The fourth proportional to 2,212.99, 3,053.92 and 1,218.28 is: 1,681.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.99 : 3,053.92 = 1,218.28 : x
  2. Step 2: Convert to fraction form
    2,212.99/3,053.92 = 1,218.28/x
  3. Step 3: Cross multiply
    2,212.99x = 3,053.92 × 1,218.28
  4. Step 4: Simplify right side
    2,212.99x = 3,720,529.66
  5. Step 5: Solve for x
    x = 3,720,529.66/2,212.99
  6. Step 6: Final answer
    x = 1,681.22

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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.