Home / 3,847.38-5,309.37-2,168.71

Finding the Fourth Proportional to 3,847.38, 5,309.37 and 2,168.71

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Solution

The fourth proportional to 3,847.38, 5,309.37 and 2,168.71 is: 2,992.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.38 : 5,309.37 = 2,168.71 : x
  2. Step 2: Convert to fraction form
    3,847.38/5,309.37 = 2,168.71/x
  3. Step 3: Cross multiply
    3,847.38x = 5,309.37 × 2,168.71
  4. Step 4: Simplify right side
    3,847.38x = 11,514,483.81
  5. Step 5: Solve for x
    x = 11,514,483.81/3,847.38
  6. Step 6: Final answer
    x = 2,992.81

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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.