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Finding the Fourth Proportional to 9,330.80, 13,991.54 and 2,755.22

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Solution

The fourth proportional to 9,330.80, 13,991.54 and 2,755.22 is: 4,131.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,330.80 : 13,991.54 = 2,755.22 : x
  2. Step 2: Convert to fraction form
    9,330.80/13,991.54 = 2,755.22/x
  3. Step 3: Cross multiply
    9,330.80x = 13,991.54 × 2,755.22
  4. Step 4: Simplify right side
    9,330.80x = 38,549,687.11
  5. Step 5: Solve for x
    x = 38,549,687.11/9,330.80
  6. Step 6: Final answer
    x = 4,131.45

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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.