Home / 5,921.78-8,171.61-3,403.90

Finding the Fourth Proportional to 5,921.78, 8,171.61 and 3,403.90

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Solution

The fourth proportional to 5,921.78, 8,171.61 and 3,403.90 is: 4,697.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.78 : 8,171.61 = 3,403.90 : x
  2. Step 2: Convert to fraction form
    5,921.78/8,171.61 = 3,403.90/x
  3. Step 3: Cross multiply
    5,921.78x = 8,171.61 × 3,403.90
  4. Step 4: Simplify right side
    5,921.78x = 27,815,343.28
  5. Step 5: Solve for x
    x = 27,815,343.28/5,921.78
  6. Step 6: Final answer
    x = 4,697.13

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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.