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Finding the Fourth Proportional to 2,067, 2,853.18 and 1,239

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Solution

The fourth proportional to 2,067, 2,853.18 and 1,239 is: 1,710.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,067 : 2,853.18 = 1,239 : x
  2. Step 2: Convert to fraction form
    2,067/2,853.18 = 1,239/x
  3. Step 3: Cross multiply
    2,067x = 2,853.18 × 1,239
  4. Step 4: Simplify right side
    2,067x = 3,535,090.02
  5. Step 5: Solve for x
    x = 3,535,090.02/2,067
  6. Step 6: Final answer
    x = 1,710.25

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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.