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Finding the Fourth Proportional to 1,926.80, 2,889.93 and 694.04

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Solution

The fourth proportional to 1,926.80, 2,889.93 and 694.04 is: 1,040.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926.80 : 2,889.93 = 694.04 : x
  2. Step 2: Convert to fraction form
    1,926.80/2,889.93 = 694.04/x
  3. Step 3: Cross multiply
    1,926.80x = 2,889.93 × 694.04
  4. Step 4: Simplify right side
    1,926.80x = 2,005,712.57
  5. Step 5: Solve for x
    x = 2,005,712.57/1,926.80
  6. Step 6: Final answer
    x = 1,040.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.