Home / 5,057.30-6,979.31-2,819.19

Finding the Fourth Proportional to 5,057.30, 6,979.31 and 2,819.19

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Solution

The fourth proportional to 5,057.30, 6,979.31 and 2,819.19 is: 3,890.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,057.30 : 6,979.31 = 2,819.19 : x
  2. Step 2: Convert to fraction form
    5,057.30/6,979.31 = 2,819.19/x
  3. Step 3: Cross multiply
    5,057.30x = 6,979.31 × 2,819.19
  4. Step 4: Simplify right side
    5,057.30x = 19,676,000.96
  5. Step 5: Solve for x
    x = 19,676,000.96/5,057.30
  6. Step 6: Final answer
    x = 3,890.61

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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.