Home / 5,057.39-6,978.83-2,819.36

Finding the Fourth Proportional to 5,057.39, 6,978.83 and 2,819.36

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Solution

The fourth proportional to 5,057.39, 6,978.83 and 2,819.36 is: 3,890.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,057.39 : 6,978.83 = 2,819.36 : x
  2. Step 2: Convert to fraction form
    5,057.39/6,978.83 = 2,819.36/x
  3. Step 3: Cross multiply
    5,057.39x = 6,978.83 × 2,819.36
  4. Step 4: Simplify right side
    5,057.39x = 19,675,837.50
  5. Step 5: Solve for x
    x = 19,675,837.50/5,057.39
  6. Step 6: Final answer
    x = 3,890.51

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1.5x scale

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.