Home / 2,213.45-3,054.57-1,218.77

Finding the Fourth Proportional to 2,213.45, 3,054.57 and 1,218.77

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Solution

The fourth proportional to 2,213.45, 3,054.57 and 1,218.77 is: 1,681.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.45 : 3,054.57 = 1,218.77 : x
  2. Step 2: Convert to fraction form
    2,213.45/3,054.57 = 1,218.77/x
  3. Step 3: Cross multiply
    2,213.45x = 3,054.57 × 1,218.77
  4. Step 4: Simplify right side
    2,213.45x = 3,722,818.28
  5. Step 5: Solve for x
    x = 3,722,818.28/2,213.45
  6. Step 6: Final answer
    x = 1,681.91

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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.