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Finding the Fourth Proportional to 7,939, 10,958.25 and 5,849.20

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Solution

The fourth proportional to 7,939, 10,958.25 and 5,849.20 is: 8,073.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939 : 10,958.25 = 5,849.20 : x
  2. Step 2: Convert to fraction form
    7,939/10,958.25 = 5,849.20/x
  3. Step 3: Cross multiply
    7,939x = 10,958.25 × 5,849.20
  4. Step 4: Simplify right side
    7,939x = 64,096,995.90
  5. Step 5: Solve for x
    x = 64,096,995.90/7,939
  6. Step 6: Final answer
    x = 8,073.69

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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.