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Finding the Fourth Proportional to 5,309.80, 7,966.30 and 3,773.80

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Solution

The fourth proportional to 5,309.80, 7,966.30 and 3,773.80 is: 5,661.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,309.80 : 7,966.30 = 3,773.80 : x
  2. Step 2: Convert to fraction form
    5,309.80/7,966.30 = 3,773.80/x
  3. Step 3: Cross multiply
    5,309.80x = 7,966.30 × 3,773.80
  4. Step 4: Simplify right side
    5,309.80x = 30,063,222.94
  5. Step 5: Solve for x
    x = 30,063,222.94/5,309.80
  6. Step 6: Final answer
    x = 5,661.84

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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.