Home / 5,160.11-7,121.42-2,922.08

Finding the Fourth Proportional to 5,160.11, 7,121.42 and 2,922.08

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Solution

The fourth proportional to 5,160.11, 7,121.42 and 2,922.08 is: 4,032.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.11 : 7,121.42 = 2,922.08 : x
  2. Step 2: Convert to fraction form
    5,160.11/7,121.42 = 2,922.08/x
  3. Step 3: Cross multiply
    5,160.11x = 7,121.42 × 2,922.08
  4. Step 4: Simplify right side
    5,160.11x = 20,809,319.69
  5. Step 5: Solve for x
    x = 20,809,319.69/5,160.11
  6. Step 6: Final answer
    x = 4,032.73

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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.