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Finding the Fourth Proportional to 1,818.99, 2,726.46 and 779.90

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Solution

The fourth proportional to 1,818.99, 2,726.46 and 779.90 is: 1,168.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.99 : 2,726.46 = 779.90 : x
  2. Step 2: Convert to fraction form
    1,818.99/2,726.46 = 779.90/x
  3. Step 3: Cross multiply
    1,818.99x = 2,726.46 × 779.90
  4. Step 4: Simplify right side
    1,818.99x = 2,126,352.52
  5. Step 5: Solve for x
    x = 2,126,352.52/1,818.99
  6. Step 6: Final answer
    x = 1,168.97

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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.