Home / 5,105.45-7,045.70-2,867.24

Finding the Fourth Proportional to 5,105.45, 7,045.70 and 2,867.24

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Solution

The fourth proportional to 5,105.45, 7,045.70 and 2,867.24 is: 3,956.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.45 : 7,045.70 = 2,867.24 : x
  2. Step 2: Convert to fraction form
    5,105.45/7,045.70 = 2,867.24/x
  3. Step 3: Cross multiply
    5,105.45x = 7,045.70 × 2,867.24
  4. Step 4: Simplify right side
    5,105.45x = 20,201,663.30
  5. Step 5: Solve for x
    x = 20,201,663.30/5,105.45
  6. Step 6: Final answer
    x = 3,956.89

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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.