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Finding the Fourth Proportional to 7,969.53, 11,953.97 and 2,126.15

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Solution

The fourth proportional to 7,969.53, 11,953.97 and 2,126.15 is: 3,189.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,969.53 : 11,953.97 = 2,126.15 : x
  2. Step 2: Convert to fraction form
    7,969.53/11,953.97 = 2,126.15/x
  3. Step 3: Cross multiply
    7,969.53x = 11,953.97 × 2,126.15
  4. Step 4: Simplify right side
    7,969.53x = 25,415,933.32
  5. Step 5: Solve for x
    x = 25,415,933.32/7,969.53
  6. Step 6: Final answer
    x = 3,189.14

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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.