Home / 3,850.86-5,317.68-2,905.02

Finding the Fourth Proportional to 3,850.86, 5,317.68 and 2,905.02

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Solution

The fourth proportional to 3,850.86, 5,317.68 and 2,905.02 is: 4,011.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.86 : 5,317.68 = 2,905.02 : x
  2. Step 2: Convert to fraction form
    3,850.86/5,317.68 = 2,905.02/x
  3. Step 3: Cross multiply
    3,850.86x = 5,317.68 × 2,905.02
  4. Step 4: Simplify right side
    3,850.86x = 15,447,966.75
  5. Step 5: Solve for x
    x = 15,447,966.75/3,850.86
  6. Step 6: Final answer
    x = 4,011.56

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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.