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Finding the Fourth Proportional to 5,654.60, 7,806.60 and 3,765.68

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Solution

The fourth proportional to 5,654.60, 7,806.60 and 3,765.68 is: 5,198.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,654.60 : 7,806.60 = 3,765.68 : x
  2. Step 2: Convert to fraction form
    5,654.60/7,806.60 = 3,765.68/x
  3. Step 3: Cross multiply
    5,654.60x = 7,806.60 × 3,765.68
  4. Step 4: Simplify right side
    5,654.60x = 29,397,157.49
  5. Step 5: Solve for x
    x = 29,397,157.49/5,654.60
  6. Step 6: Final answer
    x = 5,198.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.