Home / 3,411.20-5,113-1,330.22

Finding the Fourth Proportional to 3,411.20, 5,113 and 1,330.22

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Solution

The fourth proportional to 3,411.20, 5,113 and 1,330.22 is: 1,993.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.20 : 5,113 = 1,330.22 : x
  2. Step 2: Convert to fraction form
    3,411.20/5,113 = 1,330.22/x
  3. Step 3: Cross multiply
    3,411.20x = 5,113 × 1,330.22
  4. Step 4: Simplify right side
    3,411.20x = 6,801,414.86
  5. Step 5: Solve for x
    x = 6,801,414.86/3,411.20
  6. Step 6: Final answer
    x = 1,993.85

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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.