Home / 3,411.20-5,115.36-1,219.52

Finding the Fourth Proportional to 3,411.20, 5,115.36 and 1,219.52

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Solution

The fourth proportional to 3,411.20, 5,115.36 and 1,219.52 is: 1,828.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.20 : 5,115.36 = 1,219.52 : x
  2. Step 2: Convert to fraction form
    3,411.20/5,115.36 = 1,219.52/x
  3. Step 3: Cross multiply
    3,411.20x = 5,115.36 × 1,219.52
  4. Step 4: Simplify right side
    3,411.20x = 6,238,283.83
  5. Step 5: Solve for x
    x = 6,238,283.83/3,411.20
  6. Step 6: Final answer
    x = 1,828.77

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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.