Home / 2,212.88-3,053.80-1,218.16

Finding the Fourth Proportional to 2,212.88, 3,053.80 and 1,218.16

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Solution

The fourth proportional to 2,212.88, 3,053.80 and 1,218.16 is: 1,681.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.88 : 3,053.80 = 1,218.16 : x
  2. Step 2: Convert to fraction form
    2,212.88/3,053.80 = 1,218.16/x
  3. Step 3: Cross multiply
    2,212.88x = 3,053.80 × 1,218.16
  4. Step 4: Simplify right side
    2,212.88x = 3,720,017.01
  5. Step 5: Solve for x
    x = 3,720,017.01/2,212.88
  6. Step 6: Final answer
    x = 1,681.07

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1.5x scale

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.