Home / 5,057.20-6,978.69-2,819.32

Finding the Fourth Proportional to 5,057.20, 6,978.69 and 2,819.32

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Solution

The fourth proportional to 5,057.20, 6,978.69 and 2,819.32 is: 3,890.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,057.20 : 6,978.69 = 2,819.32 : x
  2. Step 2: Convert to fraction form
    5,057.20/6,978.69 = 2,819.32/x
  3. Step 3: Cross multiply
    5,057.20x = 6,978.69 × 2,819.32
  4. Step 4: Simplify right side
    5,057.20x = 19,675,160.29
  5. Step 5: Solve for x
    x = 19,675,160.29/5,057.20
  6. Step 6: Final answer
    x = 3,890.52

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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.