Home / 5,057.55-6,979.20-2,819.31

Finding the Fourth Proportional to 5,057.55, 6,979.20 and 2,819.31

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Solution

The fourth proportional to 5,057.55, 6,979.20 and 2,819.31 is: 3,890.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,057.55 : 6,979.20 = 2,819.31 : x
  2. Step 2: Convert to fraction form
    5,057.55/6,979.20 = 2,819.31/x
  3. Step 3: Cross multiply
    5,057.55x = 6,979.20 × 2,819.31
  4. Step 4: Simplify right side
    5,057.55x = 19,676,528.35
  5. Step 5: Solve for x
    x = 19,676,528.35/5,057.55
  6. Step 6: Final answer
    x = 3,890.53

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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.