Home / 5,105.53-7,046.13-3,117.43

Finding the Fourth Proportional to 5,105.53, 7,046.13 and 3,117.43

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Solution

The fourth proportional to 5,105.53, 7,046.13 and 3,117.43 is: 4,302.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.53 : 7,046.13 = 3,117.43 : x
  2. Step 2: Convert to fraction form
    5,105.53/7,046.13 = 3,117.43/x
  3. Step 3: Cross multiply
    5,105.53x = 7,046.13 × 3,117.43
  4. Step 4: Simplify right side
    5,105.53x = 21,965,817.05
  5. Step 5: Solve for x
    x = 21,965,817.05/5,105.53
  6. Step 6: Final answer
    x = 4,302.36

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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.