Home / 3,781.48-5,216.96-2,789.14

Finding the Fourth Proportional to 3,781.48, 5,216.96 and 2,789.14

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Solution

The fourth proportional to 3,781.48, 5,216.96 and 2,789.14 is: 3,847.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.48 : 5,216.96 = 2,789.14 : x
  2. Step 2: Convert to fraction form
    3,781.48/5,216.96 = 2,789.14/x
  3. Step 3: Cross multiply
    3,781.48x = 5,216.96 × 2,789.14
  4. Step 4: Simplify right side
    3,781.48x = 14,550,831.81
  5. Step 5: Solve for x
    x = 14,550,831.81/3,781.48
  6. Step 6: Final answer
    x = 3,847.92

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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.