Home / 5,129.46-7,689.24-2,819.34

Finding the Fourth Proportional to 5,129.46, 7,689.24 and 2,819.34

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Solution

The fourth proportional to 5,129.46, 7,689.24 and 2,819.34 is: 4,226.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.46 : 7,689.24 = 2,819.34 : x
  2. Step 2: Convert to fraction form
    5,129.46/7,689.24 = 2,819.34/x
  3. Step 3: Cross multiply
    5,129.46x = 7,689.24 × 2,819.34
  4. Step 4: Simplify right side
    5,129.46x = 21,678,581.90
  5. Step 5: Solve for x
    x = 21,678,581.90/5,129.46
  6. Step 6: Final answer
    x = 4,226.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.