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Finding the Fourth Proportional to 7,912.59, 10,919.07 and 4,327.43

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Solution

The fourth proportional to 7,912.59, 10,919.07 and 4,327.43 is: 5,971.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.59 : 10,919.07 = 4,327.43 : x
  2. Step 2: Convert to fraction form
    7,912.59/10,919.07 = 4,327.43/x
  3. Step 3: Cross multiply
    7,912.59x = 10,919.07 × 4,327.43
  4. Step 4: Simplify right side
    7,912.59x = 47,251,456.49
  5. Step 5: Solve for x
    x = 47,251,456.49/7,912.59
  6. Step 6: Final answer
    x = 5,971.68

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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.