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Finding the Fourth Proportional to 2,789.41, 3,851.05 and 1,742.89

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Solution

The fourth proportional to 2,789.41, 3,851.05 and 1,742.89 is: 2,406.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.41 : 3,851.05 = 1,742.89 : x
  2. Step 2: Convert to fraction form
    2,789.41/3,851.05 = 1,742.89/x
  3. Step 3: Cross multiply
    2,789.41x = 3,851.05 × 1,742.89
  4. Step 4: Simplify right side
    2,789.41x = 6,711,956.53
  5. Step 5: Solve for x
    x = 6,711,956.53/2,789.41
  6. Step 6: Final answer
    x = 2,406.23

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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.