Home / 5,105.49-7,045.36-2,867.47

Finding the Fourth Proportional to 5,105.49, 7,045.36 and 2,867.47

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Solution

The fourth proportional to 5,105.49, 7,045.36 and 2,867.47 is: 3,956.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.49 : 7,045.36 = 2,867.47 : x
  2. Step 2: Convert to fraction form
    5,105.49/7,045.36 = 2,867.47/x
  3. Step 3: Cross multiply
    5,105.49x = 7,045.36 × 2,867.47
  4. Step 4: Simplify right side
    5,105.49x = 20,202,358.44
  5. Step 5: Solve for x
    x = 20,202,358.44/5,105.49
  6. Step 6: Final answer
    x = 3,956.99

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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.