Home / 5,057.29-6,978.81-2,819.35

Finding the Fourth Proportional to 5,057.29, 6,978.81 and 2,819.35

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Solution

The fourth proportional to 5,057.29, 6,978.81 and 2,819.35 is: 3,890.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,057.29 : 6,978.81 = 2,819.35 : x
  2. Step 2: Convert to fraction form
    5,057.29/6,978.81 = 2,819.35/x
  3. Step 3: Cross multiply
    5,057.29x = 6,978.81 × 2,819.35
  4. Step 4: Simplify right side
    5,057.29x = 19,675,707.97
  5. Step 5: Solve for x
    x = 19,675,707.97/5,057.29
  6. Step 6: Final answer
    x = 3,890.56

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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.