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Finding the Fourth Proportional to 7,969.65, 11,949.69 and 3,039.66

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Solution

The fourth proportional to 7,969.65, 11,949.69 and 3,039.66 is: 4,557.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,969.65 : 11,949.69 = 3,039.66 : x
  2. Step 2: Convert to fraction form
    7,969.65/11,949.69 = 3,039.66/x
  3. Step 3: Cross multiply
    7,969.65x = 11,949.69 × 3,039.66
  4. Step 4: Simplify right side
    7,969.65x = 36,322,994.71
  5. Step 5: Solve for x
    x = 36,322,994.71/7,969.65
  6. Step 6: Final answer
    x = 4,557.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.