Home / 3,405.68-5,108.92-1,214.72

Finding the Fourth Proportional to 3,405.68, 5,108.92 and 1,214.72

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Solution

The fourth proportional to 3,405.68, 5,108.92 and 1,214.72 is: 1,822.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.68 : 5,108.92 = 1,214.72 : x
  2. Step 2: Convert to fraction form
    3,405.68/5,108.92 = 1,214.72/x
  3. Step 3: Cross multiply
    3,405.68x = 5,108.92 × 1,214.72
  4. Step 4: Simplify right side
    3,405.68x = 6,205,907.30
  5. Step 5: Solve for x
    x = 6,205,907.30/3,405.68
  6. Step 6: Final answer
    x = 1,822.22

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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.