Home / 3,410.40-5,115.68-1,219.28

Finding the Fourth Proportional to 3,410.40, 5,115.68 and 1,219.28

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Solution

The fourth proportional to 3,410.40, 5,115.68 and 1,219.28 is: 1,828.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,410.40 : 5,115.68 = 1,219.28 : x
  2. Step 2: Convert to fraction form
    3,410.40/5,115.68 = 1,219.28/x
  3. Step 3: Cross multiply
    3,410.40x = 5,115.68 × 1,219.28
  4. Step 4: Simplify right side
    3,410.40x = 6,237,446.31
  5. Step 5: Solve for x
    x = 6,237,446.31/3,410.40
  6. Step 6: Final answer
    x = 1,828.95

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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.