Home / 5,921.78-8,171.62-3,403.89

Finding the Fourth Proportional to 5,921.78, 8,171.62 and 3,403.89

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Solution

The fourth proportional to 5,921.78, 8,171.62 and 3,403.89 is: 4,697.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.78 : 8,171.62 = 3,403.89 : x
  2. Step 2: Convert to fraction form
    5,921.78/8,171.62 = 3,403.89/x
  3. Step 3: Cross multiply
    5,921.78x = 8,171.62 × 3,403.89
  4. Step 4: Simplify right side
    5,921.78x = 27,815,295.60
  5. Step 5: Solve for x
    x = 27,815,295.60/5,921.78
  6. Step 6: Final answer
    x = 4,697.12

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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.