Home / 3,911.39-5,867.99-1,720.29

Finding the Fourth Proportional to 3,911.39, 5,867.99 and 1,720.29

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Solution

The fourth proportional to 3,911.39, 5,867.99 and 1,720.29 is: 2,580.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.39 : 5,867.99 = 1,720.29 : x
  2. Step 2: Convert to fraction form
    3,911.39/5,867.99 = 1,720.29/x
  3. Step 3: Cross multiply
    3,911.39x = 5,867.99 × 1,720.29
  4. Step 4: Simplify right side
    3,911.39x = 10,094,641.04
  5. Step 5: Solve for x
    x = 10,094,641.04/3,911.39
  6. Step 6: Final answer
    x = 2,580.83

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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.