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Finding the Fourth Proportional to 3,869.98, 5,805.47 and 1,404.44

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Solution

The fourth proportional to 3,869.98, 5,805.47 and 1,404.44 is: 2,106.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.98 : 5,805.47 = 1,404.44 : x
  2. Step 2: Convert to fraction form
    3,869.98/5,805.47 = 1,404.44/x
  3. Step 3: Cross multiply
    3,869.98x = 5,805.47 × 1,404.44
  4. Step 4: Simplify right side
    3,869.98x = 8,153,430.54
  5. Step 5: Solve for x
    x = 8,153,430.54/3,869.98
  6. Step 6: Final answer
    x = 2,106.84

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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.