Home / 4,215.78-5,819.31-3,428.46

Finding the Fourth Proportional to 4,215.78, 5,819.31 and 3,428.46

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Solution

The fourth proportional to 4,215.78, 5,819.31 and 3,428.46 is: 4,732.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.78 : 5,819.31 = 3,428.46 : x
  2. Step 2: Convert to fraction form
    4,215.78/5,819.31 = 3,428.46/x
  3. Step 3: Cross multiply
    4,215.78x = 5,819.31 × 3,428.46
  4. Step 4: Simplify right side
    4,215.78x = 19,951,271.56
  5. Step 5: Solve for x
    x = 19,951,271.56/4,215.78
  6. Step 6: Final answer
    x = 4,732.52

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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.