Home / 5,161.38-7,121.28-3,393.57

Finding the Fourth Proportional to 5,161.38, 7,121.28 and 3,393.57

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Solution

The fourth proportional to 5,161.38, 7,121.28 and 3,393.57 is: 4,682.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.38 : 7,121.28 = 3,393.57 : x
  2. Step 2: Convert to fraction form
    5,161.38/7,121.28 = 3,393.57/x
  3. Step 3: Cross multiply
    5,161.38x = 7,121.28 × 3,393.57
  4. Step 4: Simplify right side
    5,161.38x = 24,166,562.17
  5. Step 5: Solve for x
    x = 24,166,562.17/5,161.38
  6. Step 6: Final answer
    x = 4,682.19

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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.