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Finding the Fourth Proportional to 9,505.43, 13,119 and 5,729.21

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Solution

The fourth proportional to 9,505.43, 13,119 and 5,729.21 is: 7,907.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,505.43 : 13,119 = 5,729.21 : x
  2. Step 2: Convert to fraction form
    9,505.43/13,119 = 5,729.21/x
  3. Step 3: Cross multiply
    9,505.43x = 13,119 × 5,729.21
  4. Step 4: Simplify right side
    9,505.43x = 75,161,505.99
  5. Step 5: Solve for x
    x = 75,161,505.99/9,505.43
  6. Step 6: Final answer
    x = 7,907.22

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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.