Home / 2,213.28-3,054.36-1,218.60

Finding the Fourth Proportional to 2,213.28, 3,054.36 and 1,218.60

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Solution

The fourth proportional to 2,213.28, 3,054.36 and 1,218.60 is: 1,681.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.28 : 3,054.36 = 1,218.60 : x
  2. Step 2: Convert to fraction form
    2,213.28/3,054.36 = 1,218.60/x
  3. Step 3: Cross multiply
    2,213.28x = 3,054.36 × 1,218.60
  4. Step 4: Simplify right side
    2,213.28x = 3,722,043.10
  5. Step 5: Solve for x
    x = 3,722,043.10/2,213.28
  6. Step 6: Final answer
    x = 1,681.69

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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.