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Finding the Fourth Proportional to 3,144.65, 4,716.81 and 953.28

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Solution

The fourth proportional to 3,144.65, 4,716.81 and 953.28 is: 1,429.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,144.65 : 4,716.81 = 953.28 : x
  2. Step 2: Convert to fraction form
    3,144.65/4,716.81 = 953.28/x
  3. Step 3: Cross multiply
    3,144.65x = 4,716.81 × 953.28
  4. Step 4: Simplify right side
    3,144.65x = 4,496,440.64
  5. Step 5: Solve for x
    x = 4,496,440.64/3,144.65
  6. Step 6: Final answer
    x = 1,429.87

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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.