Home / 3,921.62-5,881.82-1,147.64

Finding the Fourth Proportional to 3,921.62, 5,881.82 and 1,147.64

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Solution

The fourth proportional to 3,921.62, 5,881.82 and 1,147.64 is: 1,721.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.62 : 5,881.82 = 1,147.64 : x
  2. Step 2: Convert to fraction form
    3,921.62/5,881.82 = 1,147.64/x
  3. Step 3: Cross multiply
    3,921.62x = 5,881.82 × 1,147.64
  4. Step 4: Simplify right side
    3,921.62x = 6,750,176.76
  5. Step 5: Solve for x
    x = 6,750,176.76/3,921.62
  6. Step 6: Final answer
    x = 1,721.27

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1.5x scale

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.