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Finding the Fourth Proportional to 5,086.79, 7,630.79 and 1,799.21

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Solution

The fourth proportional to 5,086.79, 7,630.79 and 1,799.21 is: 2,699.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,086.79 : 7,630.79 = 1,799.21 : x
  2. Step 2: Convert to fraction form
    5,086.79/7,630.79 = 1,799.21/x
  3. Step 3: Cross multiply
    5,086.79x = 7,630.79 × 1,799.21
  4. Step 4: Simplify right side
    5,086.79x = 13,729,393.68
  5. Step 5: Solve for x
    x = 13,729,393.68/5,086.79
  6. Step 6: Final answer
    x = 2,699.03

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1.5x scale

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.