Home / 5,160.62-7,121.86-2,922.60

Finding the Fourth Proportional to 5,160.62, 7,121.86 and 2,922.60

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Solution

The fourth proportional to 5,160.62, 7,121.86 and 2,922.60 is: 4,033.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.62 : 7,121.86 = 2,922.60 : x
  2. Step 2: Convert to fraction form
    5,160.62/7,121.86 = 2,922.60/x
  3. Step 3: Cross multiply
    5,160.62x = 7,121.86 × 2,922.60
  4. Step 4: Simplify right side
    5,160.62x = 20,814,348.04
  5. Step 5: Solve for x
    x = 20,814,348.04/5,160.62
  6. Step 6: Final answer
    x = 4,033.30

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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.