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Finding the Fourth Proportional to 1,909.44, 2,844.45 and 1,789.92

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Solution

The fourth proportional to 1,909.44, 2,844.45 and 1,789.92 is: 2,666.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.44 : 2,844.45 = 1,789.92 : x
  2. Step 2: Convert to fraction form
    1,909.44/2,844.45 = 1,789.92/x
  3. Step 3: Cross multiply
    1,909.44x = 2,844.45 × 1,789.92
  4. Step 4: Simplify right side
    1,909.44x = 5,091,337.94
  5. Step 5: Solve for x
    x = 5,091,337.94/1,909.44
  6. Step 6: Final answer
    x = 2,666.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.