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Finding the Fourth Proportional to 7,039.29, 9,713.79 and 3,895.48

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Solution

The fourth proportional to 7,039.29, 9,713.79 and 3,895.48 is: 5,375.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,039.29 : 9,713.79 = 3,895.48 : x
  2. Step 2: Convert to fraction form
    7,039.29/9,713.79 = 3,895.48/x
  3. Step 3: Cross multiply
    7,039.29x = 9,713.79 × 3,895.48
  4. Step 4: Simplify right side
    7,039.29x = 37,839,874.67
  5. Step 5: Solve for x
    x = 37,839,874.67/7,039.29
  6. Step 6: Final answer
    x = 5,375.52

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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.