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Finding the Fourth Proportional to 3,806.60, 5,701.80 and 2,073.20

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Solution

The fourth proportional to 3,806.60, 5,701.80 and 2,073.20 is: 3,105.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,806.60 : 5,701.80 = 2,073.20 : x
  2. Step 2: Convert to fraction form
    3,806.60/5,701.80 = 2,073.20/x
  3. Step 3: Cross multiply
    3,806.60x = 5,701.80 × 2,073.20
  4. Step 4: Simplify right side
    3,806.60x = 11,820,971.76
  5. Step 5: Solve for x
    x = 11,820,971.76/3,806.60
  6. Step 6: Final answer
    x = 3,105.39

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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.