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Finding the Fourth Proportional to 7,969.66, 11,954.50 and 2,126.30

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Solution

The fourth proportional to 7,969.66, 11,954.50 and 2,126.30 is: 3,189.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,969.66 : 11,954.50 = 2,126.30 : x
  2. Step 2: Convert to fraction form
    7,969.66/11,954.50 = 2,126.30/x
  3. Step 3: Cross multiply
    7,969.66x = 11,954.50 × 2,126.30
  4. Step 4: Simplify right side
    7,969.66x = 25,418,853.35
  5. Step 5: Solve for x
    x = 25,418,853.35/7,969.66
  6. Step 6: Final answer
    x = 3,189.45

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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.