Home / 2,743.58-3,781.71-2,145.02

Finding the Fourth Proportional to 2,743.58, 3,781.71 and 2,145.02

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Solution

The fourth proportional to 2,743.58, 3,781.71 and 2,145.02 is: 2,956.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,743.58 : 3,781.71 = 2,145.02 : x
  2. Step 2: Convert to fraction form
    2,743.58/3,781.71 = 2,145.02/x
  3. Step 3: Cross multiply
    2,743.58x = 3,781.71 × 2,145.02
  4. Step 4: Simplify right side
    2,743.58x = 8,111,824.68
  5. Step 5: Solve for x
    x = 8,111,824.68/2,743.58
  6. Step 6: Final answer
    x = 2,956.65

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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.