Home / 2,213.48-3,054.49-1,218.57

Finding the Fourth Proportional to 2,213.48, 3,054.49 and 1,218.57

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Solution

The fourth proportional to 2,213.48, 3,054.49 and 1,218.57 is: 1,681.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.48 : 3,054.49 = 1,218.57 : x
  2. Step 2: Convert to fraction form
    2,213.48/3,054.49 = 1,218.57/x
  3. Step 3: Cross multiply
    2,213.48x = 3,054.49 × 1,218.57
  4. Step 4: Simplify right side
    2,213.48x = 3,722,119.41
  5. Step 5: Solve for x
    x = 3,722,119.41/2,213.48
  6. Step 6: Final answer
    x = 1,681.57

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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.