Home / 5,189.04-7,160.78-2,831.12

Finding the Fourth Proportional to 5,189.04, 7,160.78 and 2,831.12

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Solution

The fourth proportional to 5,189.04, 7,160.78 and 2,831.12 is: 3,906.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,189.04 : 7,160.78 = 2,831.12 : x
  2. Step 2: Convert to fraction form
    5,189.04/7,160.78 = 2,831.12/x
  3. Step 3: Cross multiply
    5,189.04x = 7,160.78 × 2,831.12
  4. Step 4: Simplify right side
    5,189.04x = 20,273,027.47
  5. Step 5: Solve for x
    x = 20,273,027.47/5,189.04
  6. Step 6: Final answer
    x = 3,906.89

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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.