Home / 2,282.39-3,149.64-1,287.64

Finding the Fourth Proportional to 2,282.39, 3,149.64 and 1,287.64

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Solution

The fourth proportional to 2,282.39, 3,149.64 and 1,287.64 is: 1,776.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,282.39 : 3,149.64 = 1,287.64 : x
  2. Step 2: Convert to fraction form
    2,282.39/3,149.64 = 1,287.64/x
  3. Step 3: Cross multiply
    2,282.39x = 3,149.64 × 1,287.64
  4. Step 4: Simplify right side
    2,282.39x = 4,055,602.45
  5. Step 5: Solve for x
    x = 4,055,602.45/2,282.39
  6. Step 6: Final answer
    x = 1,776.91

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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.