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Finding the Fourth Proportional to 1,869.63, 2,803.94 and 773.73

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Solution

The fourth proportional to 1,869.63, 2,803.94 and 773.73 is: 1,160.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.63 : 2,803.94 = 773.73 : x
  2. Step 2: Convert to fraction form
    1,869.63/2,803.94 = 773.73/x
  3. Step 3: Cross multiply
    1,869.63x = 2,803.94 × 773.73
  4. Step 4: Simplify right side
    1,869.63x = 2,169,488.63
  5. Step 5: Solve for x
    x = 2,169,488.63/1,869.63
  6. Step 6: Final answer
    x = 1,160.38

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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.