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Finding the Fourth Proportional to 7,958.19, 11,878.87 and 7,371.75

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Solution

The fourth proportional to 7,958.19, 11,878.87 and 7,371.75 is: 11,003.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,958.19 : 11,878.87 = 7,371.75 : x
  2. Step 2: Convert to fraction form
    7,958.19/11,878.87 = 7,371.75/x
  3. Step 3: Cross multiply
    7,958.19x = 11,878.87 × 7,371.75
  4. Step 4: Simplify right side
    7,958.19x = 87,568,041.49
  5. Step 5: Solve for x
    x = 87,568,041.49/7,958.19
  6. Step 6: Final answer
    x = 11,003.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.