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Finding the Fourth Proportional to 9,395.88, 12,936.81 and 7,976.63

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Solution

The fourth proportional to 9,395.88, 12,936.81 and 7,976.63 is: 10,982.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,395.88 : 12,936.81 = 7,976.63 : x
  2. Step 2: Convert to fraction form
    9,395.88/12,936.81 = 7,976.63/x
  3. Step 3: Cross multiply
    9,395.88x = 12,936.81 × 7,976.63
  4. Step 4: Simplify right side
    9,395.88x = 103,192,082.07
  5. Step 5: Solve for x
    x = 103,192,082.07/9,395.88
  6. Step 6: Final answer
    x = 10,982.69

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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.